Caterpillarengine - marinemarine engine

Caterpillar 3408

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 3408 is a marine propulsion diesel, not a mobile machine: a 65-degree V-8 mechanical engine built roughly 1975 to 1985 as the V-8 member of Caterpillar's new 3400 engine family, sized between the inline-six 3406 and the V-12 3412 rather than replacing one named predecessor. It displaces 18.0 L (1099 cu in) through wet cylinder liners, runs a mechanical sleeve-metering injection pump feeding individual injector nozzles, and uses a mechanical or hydromechanical all-speed governor with no electronic control module. Caterpillar offered it naturally aspirated, turbocharged, or turbocharged-aftercooled (TA/DITA), with continuous marine propulsion ratings commonly around 365-520 hp (272-388 kW) at 1800 rpm and higher-output turbocharged-aftercooled trims reaching roughly 600-800 hp (448-597 kW) at up to 2300 rpm on intermittent duty. Bare engine dry weight runs about 1678-2087 kg (3700-4600 lb) depending on aspiration and accessory package, and Cat coupled it to third-party reduction/reverse marine gears with either a raw-water heat-exchanger or closed keel-cooled circuit depending on the vessel.

Caterpillar carried the platform forward through 3408B, then 3408C, and eventually the HEUI-electronic 3408E, with each generation changing the fuel system and tightening control; none of those later engines share parts or tuning with this base mechanical 3408, so confirm the serial prefix before ordering against it. As the mechanical 3400 family aged, Cat's marine propulsion lineup moved on to the C-series, including the C18, C27, and C32. None of that has pushed the base 3408 out of service. Its straightforward mechanical design, broad parts support, and an overhaul life commonly cited in the 12,000-20,000 hour range keep it working in tugs, workboats, and commercial fishing vessels decades after production ended, and it remains a common repower and rebuild candidate in the used marine engine market today.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.

Caterpillar 3408 specifications

Engine

Model / production eraCaterpillar 3408 marine diesel, V-8, built roughly 1975-1985. Later 3408B, 3408C and 3408E are separate successor generations with their own ratings, not blended in here.
Configuration4-stroke-cycle V-8, 65-degree V-block, wet cylinder liners, mechanical unit injection (direct injection).
Bore x stroke137 mm x 152 mm (5.4 in x 6.0 in)
Displacement18.0 L (1099 cu in)
Compression ratioAbout 14:1 to 15:1 depending on rating and aspiration
AspirationNaturally aspirated, turbocharged, or turbocharged-aftercooled, depending on duty rating
Power range (marine)About 365-520 hp (272-388 kW) at 1800 rpm on continuous duty ratings; higher-output turbocharged-aftercooled versions reach roughly 600-800 hp (448-597 kW) at up to 2300 rpm on intermittent ratings. Output varies by rating letter and aspiration; check the nameplate for the exact rating.
RotationCounterclockwise, viewed from the flywheel end
GovernorMechanical or hydromechanical, all-speed
Emissions tierPre-emissions design, mechanically governed. No EPA/EU emissions tier applies; production ended before tiered standards took effect.

Weights

Net dry weightAbout 1678-2087 kg (3700-4600 lb), varies by aspiration and accessory package (cooling system type, sump)
Shipping weightClose to net dry weight for a bare engine package, roughly 1678-2087 kg (3700-4600 lb)
Ground pressureNot applicable — bare marine propulsion engine, not a ground-engaging machine

Dimensions

LengthAbout 1679-2032 mm (66.1-80.0 in), varies by cooling package and accessories
WidthAbout 1312-1549 mm (51.7-61.0 in), varies by configuration
HeightAbout 1308-1651 mm (51.5-65.0 in), varies by configuration
Wheelbase / track gaugeNot applicable — bare engine
Ground clearanceNot applicable — bare engine

Performance

Duty ratingsMarine propulsion ratings run A through D: A is unrestricted continuous duty at 100% rated load and speed; B is heavy-duty service at reduced load factor; C and D cover progressively lighter-duty, higher-output intermittent use.
Rated engine speed1800 rpm on continuous-duty ratings, up to 2300 rpm on higher-output intermittent ratings
Travel speed / gradeability / drawbarNot applicable — stationary marine propulsion engine, not a mobile machine

Service capacities (summary)

Engine oil (refill)About 60-76 L (16-20 US gal), varies by sump and pan configuration
Cooling systemAbout 90-114 L (24-30 US gal), varies between keel-cooled and heat-exchanger packages
Fuel tankNot applicable — bare engine has no integrated fuel tank; capacity is set by the vessel builder
Hydraulic systemNot applicable — no engine-mounted hydraulic system on this propulsion engine

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

3408 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with oil filter)38-76 L (10-20 US gal), varies by oil pan/sump configuration and filter setupCat DEO (Diesel Engine Oil) or equivalent meeting API CD/CE/CF-4. SAE 15W-40 for general ambient use; SAE 10W-30 acceptable for colder starts. Both grades cover roughly -18C to 40C (0F to 104F). Fuel sulfur level affects change interval and grade choice.
Cooling system (jacket water circuit, incl. radiator/heat exchanger)approx. 114 L (30 US gal), varies by configuration/series - radiator, heat exchanger, or keel-cooler installations differ; TA/DITA aftercooled versions add aftercooler-circuit volume on top of this figure50/50 mix of ethylene glycol antifreeze and demineralized or distilled water, treated with Cat SCA (Supplemental Coolant Additive) held at 1.5-3.0 units per US gallon and never exceeding 6% concentration, maintained through the coolant conditioner/filter element. Cat ELC (Extended Life Coolant), a pre-charged formulation that does not need SCA top-off, is an accepted alternative.
Fuel systemnot specified by the engine OMM - tank is sized and supplied with the vesselNo. 2-D diesel meeting Cat's fuel specification (ASTM D975 equivalent). Fuel sulfur content affects oil-change interval and DEO grade selection.
Marine reduction/reverse gear (transmission)not covered by the engine OMM - the reduction/reverse gear is a separate unit with its own fill specFollow the marine gear manufacturer's own operation and maintenance manual. Where Caterpillar supplies the gear, Cat TDTO (Transmission/Drive Train Oil) is used.
Grease points (fan idler, accessory drive bearings)spec only - no scheduled fill quantity listedCat Multipurpose Grease (MPGM), NLGI GC-LB, applied per the lubrication schedule.

Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.

Caterpillar 3408 maintenance schedule

Service intervalTasks
Every 50 h
  • Check engine oil level before starting and top off with Cat DEO to the full mark, never above.
  • Check jacket coolant level at the header tank or sight glass and look for leaks at hose clamps and the heat exchanger.
  • Drain the fuel filter/water separator bowl and check for water or sediment.
  • Confirm raw water discharge flow before and during the run; check the sea strainer basket weekly.
  • Walk the engine room for fuel, oil, or coolant leaks and watch oil pressure and water temperature gauges through warm-up.
  • Weekly, check drive belt tension and condition and inspect zinc anodes for early wasting.
Every 250 h
  • Change engine oil and filter using Cat DEO at the viscosity grade suited to ambient temperature.
  • Pull and inspect the raw water pump impeller; replace it if any vane shows cracking, curling, or a missing tip.
  • Test jacket coolant SCA concentration and dose the additive back up to spec.
  • Inspect sacrificial zinc anodes at the heat exchanger and raw water pump and replace any that are substantially wasted.
  • Check the crankcase breather and fuel priming pump for proper operation.
Every 500 h
  • Replace primary and secondary fuel filters and bleed air from the fuel system afterward.
  • Inspect turbocharger mounting, boost lines, and the compressor housing for oil weeping or shaft play.
  • Check alternator output and battery terminals; a failing alternator diode is a common cause of an erratic tachometer on this engine.
  • Re-torque exhaust manifold and turbocharger mounting hardware where leakage or discoloration shows up.
  • Inspect the wet exhaust elbow or riser for internal corrosion, a known weak point in saltwater service.
Every 1,000 h
  • Change jacket water coolant and inspect hoses, clamps, and the pressure cap.
  • Check and adjust valve lash to the cold-engine spec in the OMM.
  • Check fuel injection pump timing at operating temperature against the BTDC spec and reset if it has drifted.
  • Inspect the aftercooler core, on TA/DITA engines, for external fouling and check the coolant side for leaks.
  • Check engine mounts, the flexible coupling, and flywheel housing alignment to the marine gear.
Every 2,000 h
  • Pull injector nozzles for inspection, cleaning, or replacement; worn spray tips are the leading cause of excess black smoke on this engine.
  • Check turbocharger shaft play and inspect the aftercooler core for oil, a sign of a failing turbo seal.
  • Inspect precombustion and injection components for carbon buildup, especially on continuous-duty propulsion or generator service.
  • Check the raw water and freshwater pump seals and rebuild either if weeping.
  • Review oil analysis trends and inspect accessible cylinder liner areas for the cavitation pitting pattern tied to low-rpm marine vibration.
Every 5,000 h
  • Plan a mid-life freshen on hard-worked continuous-duty units: piston rings, connecting rod bearings, and the turbocharger core.
  • Send oil and coolant samples for full lab analysis before committing to any teardown.
  • Inspect wet cylinder liners for cavitation pitting and measure bore wear.
  • Reassess whether the exhaust elbow, riser, and heat exchanger core need replacement rather than further cleaning.
Every 15,000 h
  • Plan a major or in-frame overhaul covering pistons, liners, rod and main bearings, and a full gasket set.
  • Inspect the crankshaft and main bearing journals; the bottom end commonly outlasts the top end on this engine, so confirm condition rather than assume.
  • Recondition or replace the fuel injection pump and rebuild the injector nozzles as a matched set.
  • Rebuild or replace the turbocharger and aftercooler core.
  • Re-baseline injection timing and valve lash once the rebuild is back in service.

Servicing the 3408 beyond the schedule

Predictive Maintenance & Fluid Analysis

This mechanical, non-ECM V-8 throws no fault codes, so trending is manual. Pull oil and coolant samples on the same interval as filter changes and watch wear-metal and fuel-dilution trends rather than waiting for a gauge to move. Test jacket coolant SCA concentration on schedule; skipped SCA is the leading cause of the cylinder-liner cavitation this family sees in marine duty. Track injection timing drift against the BTDC spec, and log smoke color and exhaust temperature at cruise to catch worn injector spray tips early.

Corrective & Common Repairs

Most electrical complaints trace to the charging circuit, not engine sensors: an erratic or dead tachometer on this generation is commonly a failing alternator diode leaking AC ripple into the DC circuit, not the tach sender. Black smoke usually points to worn injector spray-tip orifices rather than the turbocharger; bypass-test the turbo before condemning it. Raw water pump impellers wear fastest of any driven component and are a straightforward field replacement. Wet exhaust elbows corrode internally in salt water and need periodic inspection before they leak into the exhaust.

Overhaul & Rebuild Points

Continuous-duty propulsion accounts commonly plan a mid-life freshen of rings, rod bearings, and the turbocharger core around 5,000-8,000 hours on hard-worked units, with a full in-frame overhaul more typically in the 12,000-20,000 hour range; lighter-duty use often runs longer. The crankshaft and main bearings usually outlast the top end, so confirm condition with oil analysis and a blow-by check rather than assuming a teardown is due on hours alone. Check wet liners for cavitation pitting, and recondition the sleeve-metering injection pump as a unit rather than piecemeal.

Seasonal & Environment Servicing

Salt water drives this engine's environmental service load. Inspect sacrificial zinc anodes at the raw water pump and heat exchanger; once a zinc is gone, corrosion attacks the housing itself. Flush the raw water circuit with fresh water after saltwater runs and before winter layup to slow scale buildup. Heat exchanger cores get a cleaning and pressure test roughly every two years in salt water, with full core replacement closer to a six-year cycle. Drain raw water circuits fully for freezing layup; keel-cooled jacket water also needs an antifreeze check.

3408 common service parts

Part numberPart
2N-3341Filter High PressureCheck fitment →

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3408 fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
LOW OIL PRESSUREOil pressure switch signals pressure below the prealarm setpoint; a second switch set lower trips full engine shutdown.Low oil level, plugged oil filter, worn oil pump, worn bearings, or a failed pressure sender.Check oil level and filter condition first, verify the switch with a mechanical gauge, then inspect the pump and bearings if low pressure is confirmed.
HIGH WATER TEMPERATUREJacket water temperature switch signals coolant above the prealarm setpoint, with a second switch set higher for shutdown.Loss of raw water flow, fouled heat exchanger, low coolant, stuck thermostat, or a slipping drive belt.Check the raw water strainer and pump first, verify coolant level, and inspect the heat exchanger for fouling before restart.
OVERSPEEDMagnetic pickup at the flywheel detects engine speed above the governor overspeed setpoint and trips the fuel shutoff solenoid, moving the fuel rack to OFF.Governor or linkage malfunction, broken or disconnected throttle linkage, or a failing magnetic pickup.Do not restart until governor linkage and control cable travel are inspected; check magnetic pickup air gap and wiring.
LOW FUEL PRESSUREFuel supply/pressure switch signals inadequate fuel delivery to the injection pump ahead of a performance-affecting shortage.Clogged primary or secondary fuel filter, air in the fuel system, or a weak fuel transfer pump.Replace fuel filters, bleed air from the system, and check transfer pump output before returning the engine to service.
LOW JACKET WATER LEVELCoolant level switch in the header or expansion tank signals coolant has dropped below the safe operating level.External coolant leak, internal leak at a head gasket or aftercooler core, or a loose fill cap losing coolant under pressure.Top off coolant with the correct mix, pressure test the cooling system, and check the aftercooler core for internal leakage.
HIGH EXHAUST TEMPERATUREExhaust temperature switch near the turbocharger outlet or wet exhaust elbow signals abnormally high exhaust gas temperature.Loss of raw water flow to the exhaust mixing elbow, overfueling, or a failing turbocharger.Confirm raw water flow to the exhaust elbow immediately; loss of cooling water here can damage the elbow within minutes.
LOW SEA WATER PRESSURERaw water pump discharge pressure switch signals pressure below setpoint, indicating reduced seawater cooling flow.Clogged sea strainer, worn or failed impeller, blocked through-hull fitting, or a slipping belt on a belt-driven pump.Clear the strainer and inspect impeller condition before restarting; running without raw water flow risks rapid overheating.

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

3408 attachments & work tools

Marine reduction gear / transmission

The 3408 couples to a marine reduction/reverse gear (Twin Disc, ZF and similar) through the flywheel drive. Reduction ratios documented for this class range roughly 2.5:1 to 5:1, chosen to match propeller size and hull type; exact ratio varies by installation.

Flywheel housing and coupling

Propulsion-rated 3408 engines use an SAE No. 1 flywheel housing to mount the marine gear through a flexible coupling. Housing size and flywheel tooth count vary with the specific gear or drive-end selected, so confirm against the installation drawing.

Cooling system arrangement

Offered with either a raw-water heat exchanger (jacket water cooled by circulated seawater) or a closed keel-cooler system, where jacket coolant runs through hull-mounted tubing cooled by ambient sea temperature. Choice depends on vessel type and operating water.

Raw water (seawater) pump and accessory drive

A belt- or gear-driven raw water pump off the front accessory drive circulates seawater through the heat exchanger and, on heat-exchanger-cooled installations, the exhaust manifold jacket. Pump capacity is matched to cooling load and varies by rating.

Turbocharging and aftercooling trim

Available naturally aspirated or turbocharged, with turbocharged-aftercooled (TA/DITA) versions adding a jacket-water aftercooler to the intake air. Continuous marine propulsion output for this class is commonly cataloged around 300-520 hp (224-388 kW) at 1800-2100 rpm, with more heavily boosted trims listed higher; output varies by configuration and duty rating.

Governor and fuel system

Fuel system is mechanical unit injection paired with a mechanical governor group (Woodward-type units documented for this engine) rather than electronic engine management. No electronic control module or emissions aftertreatment is fitted, consistent with this engine generation.

Starting and charging system

Electric starting motor is offered in 24V configurations, with 32V seen on some installations, using a magnetic starter switch. Charging alternator options include 24V units across a range of amperage ratings with external fan and internal regulator; exact amperage varies by configuration.

Instrument panel and alarm/shutdown system

Marine panel setup includes mechanical gauges plus sending units and switches for oil pressure and water temperature, an ammeter, and a circuit breaker, driving an audible/visual alarm or automatic shutdown outside safe operating ranges. Some propulsion installations add a second control station for dual-helm operation.

Exhaust system

Each cylinder bank has its own cast-iron exhaust manifold feeding the turbocharger(s) before exiting to the vessel exhaust run. Marine installations commonly add a water-cooled riser or mixing elbow downstream of the manifold; confirm the exact arrangement against the specific installation.

Marine corrosion-protection hardware

Marine-duty parts for this class include corrosion-resistant exhaust hardware and head gaskets suited to saltwater service. These are protective/maintenance items rather than functional work-tool attachments but are commonly specified alongside the base engine for marine use.

All 3408 assemblies by section

Every catalogued assembly group for the Caterpillar 3408. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Basic Engine
1w4872 Oil Baffle Group
1W***72Baffle Group-Oil; Oil Baffle Group1
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4n1092 Rear Balancer Group
4n963 Camshaft Gp
4N***63Camshaft Group; Camshaft Group-Single1
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4n0963 Camshaft Gp
4N***63Camshaft Group; Camshaft Group-Single1
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4n6955 Cylinder Block Cover Group
4n1902 Flywheel Housing Cover Group
4n6798 Front Housing Cover Group
4N***98Cover Group-Front Housing; Front Structure Cover Group1
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6n3894 Oil Pan Cover Group
4n4299 Valve Mechanism Cover Group
8n2184 Valve Mechanism Cover Group--L.H.
7n3407 Crankshaft Assembly*R
Crankshaft Bearing Replacements
Crankshaft Bearings Replacements
7n3410 Crankshaft Gp
4n0920 Crankshaft Gp
7n851 Cylinder Block Assembly
7n9681 Cylinder Block Gp
7N***81Cylinder Block Group; Cylinder Block Group1
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7n853 Cylinder Block Group--Field Installation
6n2151 Cylinder Block Group
7n9683 Cylinder Block Group
4n801 Cylinder Block Group
1w9799 Cylinder Head Assembly
1w9800 Cylinder Head Assembly--Field Installation
4n1816 Cylinder Head Gp*R
4N***16Cylinder Head Group; Cylinder Head Group -Or-1
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4n1710 Cylinder Head Group
1w9802 Cylinder Head Group
6n9979 Cylinder Head Group
4n1817 Cylinder Head Gp*R
7n857 Cylinder Head Group
2w2017 Pulley And Damper Group
4n2583 Pulley And Damper Group
6n3187 Pulley And Damper Gp
6n7510 Flywheel Group
7n3080 Flywheel Group
4n4301 Front Gear Group--Timing
7n9013 Gasket Service Group--Cylinder Head--Field Installation
7N***23Seal Cylinder Liner4
7N***06Gasket--Cylinder Head1
7N***07Gasket--Plate1
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7n2840 Front Gear Group--Timing
7N***40Gear Group-Front; Front Timing Gear Group1
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4n3825 Rear Gear Group
4N***25Gear Group-Rear; Rear Timing Gear Group1
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1w1630 Belt Guard Group--Damper & Alternator
6n3541 Belt Guard Group--Replaced By 1w1630 Shown On Page 26b
6N***41Guard Group-Belt; -Damper & Alternator1
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6n2890 Damper Guard Gp
6N***90Guard Group-Damper; Guard Group-Damper1
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4n1890 Housing Gp--Flywheel
4n5226 Front Housing Group
4N***26Housing Group-Front; Front Housing Group1
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4n9442 Crankshaft Assembly*R
7n1748 Lifting Group
7N***48Lifting Group; Lifting Gp-Engine1
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8n11 Lifting Group
4n1733 Oil Pan Group
4n1993 Rod And Piston Group--8 Required
4N***93Piston & Rod Group; Connecting Rod And Piston Group1
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7n3518 Rod And Piston Group--8 Required
7N***18Piston & Rod Group; Connecting Rod & Piston Group -Or-1
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7n3518 Connecting Rod And Piston Group--8 Required
7N***18Piston & Rod Group; Connecting Rod & Piston Group -Or-1
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2w9054 Rod & Piston Gp--8 Required
2W***54Piston & Rod Group; Connecting Rod & Piston Group1
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7n3517 Rod And Piston Group--8 Required
7N***17Piston & Rod Group; Connecting Rod And Piston Group1
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7n3518 Rod & Piston Gp--8 Required
7N***18Piston & Rod Group; Connecting Rod & Piston Group -Or-1
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4n1994 Rod And Piston Group--8 Required
4N***94Piston & Rod Group; Connecting Rod And Piston Group1
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7n3517 Rod & Piston Gp--8 Required
7N***17Piston & Rod Group; Connecting Rod And Piston Group1
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2w9053 Piston Gp
6n4581 Crankshaft Pulley Group
4n1718 Rocker Arm Group
4n1029 Support Group--Front
4N***29Support Group-Engine; Support Group Front1
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8n9338 Support Gp--Front
8N***38Support Group-Engine; Support Group-Front Engine1
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8n7676 Support Group--Front
4n4298 Valve Mechanism Group
4N***98Valve Mechanism Group; Valve Mechanism Group1
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Cooling System
4n7173 Water Aftercooler Group
5n2876 Auxiliary Lines Group--Sea Water
4n7050 Auxiliary Expansion Tank Connection Group
4N***50Connection Group-Auxiliary Exp Tank1
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5n8623 Emergency Water Connections Group
6n5615 Emergency Water Connection Group--Replaced By 5n8623 Shown On Page 54b
2w247 Coolant Conditioner Group--Type 1
2w248 Coolant Conditioner Group--Type 2
2w248 Coolant Conditioner Group--Type 1
2w247 Coolant Conditioner Group--Type 2
4n729 Oil Cooler Group
4N***29Cooler Group-Engine Oil; Engine Oil Cooler Group1
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4n1871 Marine Gear Oil Cooler Group
6n1906 Water Lines Cover Group
6N***06Cover Group-Water Lines; Water Lines Cover Group1
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6n671 Filler And Cap Group--Expansion Tank
6N***71Filler & Cap Group; -Radiator-Coolant1
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8n8272 Gauge Gp-Water Level
3n7992 Heat Exchanger Group--Sea Water
3N***92Heat Exchanger Group; Heat Exchanger Group High Capacity1
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3n9094 Heat Exchanger Group--Sea Water
3N***94Heat Exchanger Group; Heat Exchanger Group High Capacity1
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3n8889 Heat Exchanger Group--Sea Water
3N***89Heat Exchanger Group; Heat Exchanger Group-High Capacity1
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3n8890 Heat Exchanger Assembly
3n8888 Heat Exchanger Group--Sea Water--762 Mm (30")
3N***88Heat Exchanger Group; Heat Exchanger Group-High Capacity1
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3n8775 Heat Exchanger Group--Sea Water
3n7990 Heat Exchanger Group--Sea Water
4n7174 Water Lines Gp--Aftercooler
4N***74Lines Group-Water; Water Aftercooler Lines Group1
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4n7174 Water Lines Group--Aftercooler
4N***74Lines Group-Water; Water Aftercooler Lines Group1
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4n3707 Water Lines Group
4n3707 Lines Gp-Water
5n2857 Oil Single Pass Cooler Assembly
5N***57Oil Single Pass Cooler Assembly1
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7c3613 Pump Gp-Auxiliary-Sea Water
5n2600 Pump Gp-Auxiliary
3n7713 Pump Gp--Auxiliary--Sea Water
3n7790 Pump Gp-Auxiliary-Sea Water
3n8561 Pump Gp--Auxiliary--Sea Water
3N***61Pump Group-Auxiliary; Pump Group-Auxiliary Sea Water1
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7c3614 Pump Gp-Auxiliary-Sea Water
5n7491 Pump Gp-Auxiliary-Sea Water
3n7714 Auxiliary Pump Group--Sea Water
4n7498 Water Pump Gp (4n1951 N/S)*R
4N***98Pump Group-Water; Pump Gp-Water (4n***51 N/S)1
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4n1698 Expansion Tank Group--Part 1 Of 2
8n9326 Expansion Tank Group--Part 1 Of 2
7n7877 Expansion Tank Group--Part 2 Of 2
7N***77Tank Group-Expansion; Tank Group-Expansion-B1
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7n7877 Expansion Tank Group--Part 1 Of 2
7N***77Tank Group-Expansion; Tank Group-Expansion-B1
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4n1698 Expansion Tank Group--Part 2 Of 2
4n1698 Expansion Tank Gp-Part 1 Of 2
8n9326 Expansion Tank Group--Part 2 Of 2
4n1698 Expansion Tank Gp-Part 2 Of 2
7n9529 Water Level Gauge Group
Engine Arrangement
8n6663 Engine Arrangement--Part 1 Of 2
2N***20Breather Group; Breather Gp-Crankcase2
2W***17Damper & Pulley Group1
2W***54Piston & Rod Group; Connecting Rod & Piston Group8
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2w6101 Engine Arrangement--Dita--Part 1 Of 2
2N***20Breather Group; Breather Gp-Crankcase2
2W***17Damper & Pulley Group1
2W***01Engine Ar1
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2w6101 Engine Arrangement--Dita--Part 2 Of 2
1W***37Turbocharger Group; Turbocharger Group-Watercooled1
2W***86Drive Group-Governor & Fuel Pump1
2W***01Engine Ar1
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4n2243 Engine Arrangement--Part 1 Of 2
2N***20Breather Group; Breather Gp-Crankcase2
4N***01Cylinder Block Group1
4N***20Crankshaft Group1
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8n6663 Engine Arrangement--Part 2 Of 2--Direct Injection Turbocharged
4N***29Cooler Group-Engine Oil; Engine Oil Cooler Group1
4N***98Tank Group-Expansion1
4N***71Cooler Group-Marine Tmsn Oil1
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4n2243 Engine Arrangement--Part 2 Of 2
4N***77Drive Group-Governor & Fuel Pump; Governor And Fuel Pump Drive Group1
4N***29Cooler Group-Engine Oil; Engine Oil Cooler Group1
4N***02Drive Group-Tachometer; Tachometer Drive Group-Single1
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6n1152 Engine Arrangement--Part 1 Of 2
4N***01Cylinder Block Group1
4N***20Crankshaft Group1
4N***63Camshaft Group; Camshaft Group-Single1
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6n1152 Engine Arrangement--Part 2 Of 2--Direct Injection Turbocharged
2N***20Breather Group; Breather Gp-Crankcase2
4N***29Cooler Group-Engine Oil; Engine Oil Cooler Group1
4N***98Tank Group-Expansion1
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Fuel System And Governor
5n3220 Air Actuator Group--Type 1
5N***20Actuator Group-Air; -Governor Control1
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5n3220 Air Actuator Group--Type 2
5N***20Actuator Group-Air; -Governor Control1
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3n9000 Mechanical Control-Remote Chart
3n9205 Governor Control Arrangement--Mt
3N***03Mounting Group-Governor Control1
3N***05Control Ar-Governor1
5L***94Control As-Lever; (Pilot House)1
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4n8256 Fuel Ratio Control Group
6n6209 Fuel Ratio Control Group
6n0651 Fuel Ratio Control Gp*R
2w3157 Fuel Ratio Control Group
7n5486 Fuel Ratio Control Gp*R
9n3362 Fuel Ratio Control Group
9N***62Control Group-Fuel Ratio; Fuel Ratio Control Group - Or -1
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6n818 Fuel Ratio Control Group
3n5964 Governor Control Group--Remote--Single Lever
3L***01Terminal Block-- Strut To Conduit1
3N***64Control Group-Governor1
3N***40Control Assembly--Md241
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6n2844 Positive Lock Control Group--R.H.
3n9158 Mechanical Governor Control--Remote--Dual Lever
3L***01Terminal Block-- Strut To Conduit2
3N***58Control Group-Governor1
6L***34Control Assembly--Duel Lever--Remote1
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4n3828 Governor Control Group--Remote & Positive Locking
4n3830 Control Gp-Governor-Positive Locking
6n2846 Governor Control Group--Remote & Positive Lock--R.H.
3n8146 Governor Control Group--Type 1
3n8029 Governor Control Group--Type 2
3n8029 Governor Control Group--Type 1
6n2845 Governor Vernier And Positive Lock Control Group
6N***45Control Group-Governor; -Vernier And Positive Lock1
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3n8146 Governor Control Group--Type 2
4n3829 Control Gp-Governor-Vernier & Positive Locking
5n2832 Mechanical Control Group--Remote--Single Lever
3L***01Terminal Block-- Strut To Conduit1
3N***40Control Assembly--Md241
3N***72Control Assembly--Additional Station1
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3n9173 Mechanical Control Group--Remote--Dual Lever
3N***72Control Assembly--Additional Station2
3N***73Control Group-Mechanical1
6L***34Control Assembly--Duel Lever--Remote1
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5n9174 Control Gp-Governor
5n9175 Control Gp-Governor-32 Volt Dc Relay
4W***16Spring-Retainer1
5N***75Control Group-Voltage1
9G***28Relay As; (Solenoid Shutoff)1
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3n8898 Control Mounting Group--Engine And Marine Gear
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly12
1D***17Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks4
3B***06Washer,Lock; Flange,Elbow,Clamp Assembly,Tube To Pump,Tube Assembly To Screen,Clip Mounting,And Tube Assembly To Transmission12
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3n9010 Control Mounting Group--Engine And Marine Gear
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting4
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
1D***16Nut,Plain,Hexagon Clip Uoc:Bsv,Bsx4
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3n8929 Control Mounting Group--Engine
3N***28Mounting Assembly Engine1
3N***29Control Mounting Group1
6N***46Control Group-Governor1
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8n3104 Woodward Psg Governor Conversion Group--Part 2 Of 2--Field Installation--Type 1
8n3104 Woodward Psg Governor Conversion Gp--Field Installation--Part 2 Of 2
8n3104 Woodward Psg Governor Conversion Gp--Field Installation--Part 1 Of 2
8n3104 Woodward Psg Governor Conversion Gp--Part 1 Of 2--Type 5
8n3104 Woodward Psg Governor Conversion Gp-Part 2 Of 2-Type 5
8n3104 Woodward Psg Governor Conversion Group--Part 1 Of 2--Field Installation--Type 1
8n6389 Governor Cover Group
2w1788 Drain Gp-Fuel-Alarm Switch & Lines
6n1656 Governor Gp-Drive
2w3986 Governor And Fuel Pump Drive Group
2W***86Drive Group-Governor & Fuel Pump1
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6n3195 Governor And Fuel Pump Drive Group
6N***95Drive Group-Governor & Fuel Pump; Governor & Fuel Injection Pump Drive Group1
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4n677 Governor And Fuel Pump Drive Group
4N***77Drive Group-Governor & Fuel Pump; Governor And Fuel Pump Drive Group1
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9n3959 Governor And Fuel Pump Drive Group
9N***59Drive Group-Governor & Fuel Pump1
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6n1672 Fuel Injection Lines Fastener Group
4n9792 Woodward Fastener Group
4N***92Fastener Group-Woodward Governor1
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8h7204 Fuel Filter Group--Type 1
4n1981 Fuel Filter Group
6n6290 Fuel Filter Group--Duplex--L.H.--Type 2
6n6282 Fuel Filter Group--Duplex--R.H.
6n6290 Fuel Filter Group--Duplex--L.H.--Type 1
8h7204 Fuel Filter Group--Type 2
7n1076 Fuel Injection Pump Group--End View--Type 3--Part 2 Of 2
7n1233 Fuel Injection Pump Group--Part 1 Of 2--Type 1
7n1233 Fuel Injection Pump Group--Part 1 Of 2--Type 2
7n1233 Fuel Injection Pump Group--Part 2 Of 2--Type 2
4n2637 Fuel Injection Pump Group--Side View--Part 1 Of 2
7n1233 Fuel Injection Pump Group--Part 1 Of 2--Type 3
7n1233 Fuel Injection Pump Group--Part 2 Of 2--Type 1
7n1076 Fuel Injection Pump Group--End View--Type 1-Part 2 Of 2
7n1233 Fuel Injection Pump Group--Part 2 Of 2--Type 3
7n1076 Fuel Injection Pump Group--Side View--Type 3--Part 1 Of 2
7n1076 Fuel Injection Pump Group--End View--Type 2--Part 2 Of 2
7n1076 Fuel Injection Pump Group--Side View--Type 2-Part 1 Of 2
4n2637 Fuel Injection Pump Group--End View--Part 2 Of 2
7n1076 Fuel Injection Pump Group--Side View--Type 1-Part 1 Of 2
7n1232 Governor And Fuel Injection Pump Group
7N***32Governor And Fuel Injection Pump Group1
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6n8792 Governor And Fuel Injection Pump Group
6N***92Governor And Fuel Injection Pump Group1
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3n9204 Governor Control Arrangement--Twin 'S'
3N***03Mounting Group-Governor Control1
3N***04Governor Control Arrangement1
5L***91Twin "S" Control --Pilot House; Twin "S" Control-- Pilot House1
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7n6271 Governor Gp-Part 1 Of 2
7n7327 Governor Group--Part 1 Of 2--Replaced By 8n7526 Shown On Pages 107c & 107d
4n1894 Governor Group--Part 3 Of 3--Type 1
8n6951 Governor Gp-Woodward
4w6811 Governor Gp-Woodward
8n7526 Governor Gp-Part 2 Of 2
4n1894 Governor Group--Part 2 Of 3--Type 2
4n1894 Governor Group--Part 3 Of 3--Type 3
1w1637 Woodward Governor Gp
1w1636 Woodward Governor Group
6n5178 Governor Group--Part 2 Of 3--Type 1
8n6951 Governor Gp-Woodward-Psg
6n5178 Governor Group--Part 1 Of 3--Type 1
4n1894 Governor Group--Part 3 Of 3
8n6951 Woodward Governor Group--Psg--24 Volt Motor
4n1894 Governor Group--Part 3 Of 3--Type 2
8n6775 Woodward Governor Group
8n7526 Governor Gp-Part 1 Of 2
4n1894 Governor Group--Part 1 Of 3--Type 1
1w1637 Governor Gp-Woodward
6n5178 Governor Group--Part 3 Of 3--Type 2
4n1894 Governor Group--Part 1 Of 3
4n1894 Governor Group--Part 1 Of 3--Type 3
7n6271 Governor Gp-Part 2 Of 2
7n6271 Governor Gp--Part 2 Of 2
4n1894 Governor Group--Part 2 Of 3--Type 1
6n5178 Governor Group--Part 1 Of 3--Type 2
4n1894 Governor Group--Part 2 Of 3
6n5178 Governor Group--Part 3 Of 3--Type 1
7n7327 Governor Group--Part 2 Of 2--Replaced By 8n7526 Shown On
6n5178 Governor Group--Part 2 Of 3--Type 2
4n1894 Governor Group--Part 1 Of 3--Type 2
4n1894 Governor Group--Part 2 Of 3--Type 3
8n7526 Governor Gp-Up-Part 1 Of 2
6n9732 Woodward Governor Group
6n9735 Woodward Governor Group
6N***35Governor Group-Woodward; Woodward Psg Governor Group1
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7n1236 Governor, Fuel Injection And Fuel Transfer Pump Group
7N***36Governor, Fuel Injection And Fuel Transfer Pump Group1
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7n4574 Fuel Injection Housing Assembly--Type 1
7n4574 Fuel Injection Housing Assembly--Type 2
7n4574 Housing As-Pump
4n779 Fuel Injection Housing Assembly
4n779 Fuel Injection Housing Assembly--Type 1
4n779 Housing As-Fuel Injection
3n6668 Lines Gp--Fuel Oil--Flexible
6n8130 Fuel Filter Lines Gp-Duplex-R.H.-Type 1
6n8969 Fuel Filter Lines Gp-L.H.-Type 1
8n2208 Lines Gp-Fuel Filter-Duplex L.H.
6n7666 Fuel Filter Lines Group
7w1071 Fuel Filter Lines Gp
6n8130 Fuel Filter Lines Gp-Duplex-R.H.-Type 2
6n8969 Fuel Filter Lines Gp-L.H.-Type 4
6n8130 Fuel Filter Lines Gp-Duplex-R.H.-Type 3
6n8969 Fuel Filter Lines Gp-L.H.-Type 2
6n8969 Fuel Filter Lines Gp-L.H.-Type 3
8n2461 Fuel Injection Lines Group
8N***61Lines Group-Fuel Injection; Fuel Injection Lines Group1
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9n3958 Lines Gp--Fuel Injection
9N***58Lines Group-Fuel Injection; Fuel Injection Lines Group1
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4n2087 Fuel Injection Lines Group
4N***87Lines Group-Fuel Injection; Fuel Injection Lines Group - Or -1
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4n2088 Fuel Injection Lines Group
4n2087 Fuel Injection Lines Gp
4N***87Lines Group-Fuel Injection; Fuel Injection Lines Group - Or -1
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4n2088 Lines Gp--Fuel Injection
3n8981 Control Mounting Group--Engine And Marine Gear
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting4
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
1D***16Nut,Plain,Hexagon Clip Uoc:Bsv,Bsx4
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3n8397 Control Mounting Group--Engine And Marine Gear
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly12
1D***17Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks4
3B***06Washer,Lock; Flange,Elbow,Clamp Assembly,Tube To Pump,Tube Assembly To Screen,Clip Mounting,And Tube Assembly To Transmission12
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7w1083 Mounting Gp-Filter
6n3212 Primary Fuel Filter Mounting Group
6N***12Mounting Group-Primary Fuel Filter; Mounting Gp-Primary Fuel Filter1
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6n1947 Governor Servo Basic Piston Group--Type 2
6n1947 Governor Servo Basic Piston Group--Type 1
6n5314 Governor Servo Basic Piston Group
7n7328 Governor Adapter Plate Group--Type 1
7n7328 Plate Gp-Adapter-Governor-Type 2
9n3684 Governor Adapter Plate Group--Type 3
8n7525 Plate Gp-Governor
9n3684 Governor Adapter Plate Group--Type 2
9n3684 Governor Adapter Plate Group--Type 1
9n3326 Fuel Injection Pump Group--Part 1 Of 2--Type 2
9n3328 Fuel Injection Pump Group--Side View--Type 2--Part 1 Of 2
6n7829 Fuel Injection Pump Gp
9n3326 Fuel Injection Pump Group--Part 2 Of 2--Type 2
7n1185 Fuel Injection Pump Gp
9n3328 Fuel Injection Pump Group--Side View--Part 1 Of 2--Type 1
9n3328 Fuel Injection Pump Group--End View--Type 2--Part 2 Of 2
9n3328 Fuel Injection Pump Group--End View--Part 2 Of 2--Type 1
7n6389 Fuel Injection Pump Group--Part 2 Of 2
6n1043 Fuel Injection Pump Gp
6N***43Pump Group-Fuel Injection; Pump Group-Fuel Injection1
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7n6389 Fuel Injection Pump Group--Part 1 Of 2
4n3287 Fuel Priming Pump Group
4N***87Pump Group-Fuel Priming; Pump Group-Fuel Priming1
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4n1101 Fuel Transfer Pump Group
4n1111 Fuel Transfer Pump Group--Type 1
4n1111 Fuel Transfer Pump Group--Type 2
4w5477 Fuel Transfer Pump Group
7n7575 Governor, Fuel Injection And Fuel Transfer Pump Group--Type 2
7N***75Pump Group-Gov,Fuel Inj,Fuel Tfr1
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8n6664 Governor, Fuel Injection And Fuel Transfer Pump Group--Type 1
8N***64Pump Group-Gov,Fuel Inj,Fuel Tfr1
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7n7575 Governor Fuel Injection And Fuel Transfer Pump Group--Type 1
7N***75Pump Group-Gov,Fuel Inj,Fuel Tfr1
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8n6664 Governor, Fuel Injection And Fuel Transfer Pump Group--Type 2
8N***64Pump Group-Gov,Fuel Inj,Fuel Tfr1
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7n8242 Governor, Fuel Injection And Fuel Transfer Pump Group
7N***42Pump Group-Gov,Fuel Inj,Fuel Tfr1
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2w4234 Water Separator Group
2s9519 Rack Stop Group--Type 2
2s9519 Rack Stop Group--Type 1
7n4196 Woodward Governor Syncronizing Motor Switch Group--
7N***96Switch Group; Woodward Gov. Syncronizing Motor Switch1
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8n1635 Woodward Governor Switch Group
7n4196 Woodward Governor Synchronizing Motor Switch--
7N***96Switch Group; Woodward Gov. Syncronizing Motor Switch1
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8n6670 Woodward Governor Switch Group
8N***70Switch Group-Woodward Governor; Woodward Governor Swtich Gp1
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4n4267 Governor Torque Spring Group
4N***67Torque Control Group; Governor Torque Spring Group1
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Intake And Exhaust System
4n5498 Adapter Gp-Air Cleaner
4n1617 Air Cleaner Group
8n3372 Air Cleaner Group--Type 1
8n3371 Air Cleaner Group--Type 1
8n3372 Air Cleaner Group--Type 2
8n3111 Air Cleaner Gp
8N***11Air Cleaner Group; Air Cleaner Group1
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8n5766 Air Cleaner Gp
4n0878 Air Cleaner Gp
8n3371 Air Cleaner Group--Type 2
6n9075 Air Cleaner Group
6N***75Air Cleaner Group; Air Cleaner Group1
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1n3999 Turbocharger Cartridge Gp*R
9n6675 Cartridge Gp-Turbocharger
1w1653 Turbocharger Cartridge Gp*R
9n3998 Turbocharger Cartridge Group
6n4432 Exhaust Elbow Gp
3n7286 Exhaust Elbow Group--Watercooled 8" O.D.
7l447 Exhaust Elbow Group--90 Degree Bend--6"
6n9093 Exhaust Elbow Group
3n3018 Exhaust Fitting Group--Vertical--6"--Replaced By 2w7847
2w7847 Exhaust Fitting Group
2W***47Fitting Group-Exhaust; -Flexible1
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5l6797 Exhaust Fitting Group--Vertical--8"
6l3642 Exhaust Flange Group--8"
6L***42Flange Group-Exhaust; Exhaust Flange Group1
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2w7860 Exhaust Flange Gp - 152 Mm (6 In.)-2 Required
5l8601 Exhaust Flange Group--6" Replaced By 2w7851
5L***01Flange Group-Exhaust; Exhaust Flange Group1
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2w7851 Exhaust Flange Gp - 152 Mm (6 In.)
4n7131 Air Lines Group
4n7172 Air Lines Group
4n7172 Lines Gp-Air
4n1886 Exhaust Manifold Gp--Part 1 Of 2
4N***86Manifold Group-Exhaust; Watercooled Exhaust Manifold Group1
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4n1886 Exhaust Manifold Group--Part 2 Of 2
4N***86Manifold Group-Exhaust; Watercooled Exhaust Manifold Group1
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4n1886 Exhaust Manifold Group--Part 1 Of 2
4N***86Manifold Group-Exhaust; Watercooled Exhaust Manifold Group1
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4l5801 Exhaust Pipe Group--6"
5l3338 Exhaust Pipe Group--8"
6n6131 Turbocharger Group
6n2948 Turbocharger Group--Watercooled--Type 3
6N***48Turbocharger Group; -Watercooled1
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6n7792 Turbocharger Group--Type 1
8n6953 Turbocharger Gp
8n7192 Turbocharger Group--Watercooled
8N***92Turbocharger Group; Turbocharger Group-Watercooled1
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6n2951 Turbocharger Group--Watercooled
6n6127 Turbocharger Group
6n2929 Turbocharger Group
8n7192 Turbocharged Group--Watercooled
8N***92Turbocharger Group; Turbocharger Group-Watercooled1
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1n3991 Turbocharger Group
1w2237 Turbocharger Group--Watercooled
1W***37Turbocharger Group; Turbocharger Group-Watercooled1
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6n6312 Turbocharger Group--Watercooled
6n7792 Turbocharger Group--Type 2
6n2948 Turbocharger Group--Watercooled--Type 1
6N***48Turbocharger Group; -Watercooled1
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6n2948 Turbocharger Group--Watercooled--Type 2
6N***48Turbocharger Group; -Watercooled1
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6n6132 Turbocharger Group
1w1304 Turbocharger Gp
1w1654 Turbocharger Gp*R
6n6311 Turbocharger Group--Watercooled
6N***11Turbocharger Group; Turbocharger Group-Watercooled1
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Lubrication System
2n8220 Breather Gp
2N***20Breather Group; Breather Gp-Crankcase1
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4w1544 Cover Gp-Lower Structure
6n3894 Cover Gp-Oil Pan
4n2481 Oil Pump Mounting Fastener Gp
4N***81Fastener Group-Oil Pump Mounting; Oil Pump Mounting Fastener Group1
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6n5032 Oil Lines Group--L.H. Mounted Filters--Duplex--Part 2 Of 2 -- Type 1
6N***32Filter Group-Engine Oil; -Duplex Lh1
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6n5032 Filter Gp--Engine Oil--L.H.--Duplex--Part 2 Of 2
6N***32Filter Group-Engine Oil; -Duplex Lh1
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6n5032 Oil Lines Group--L.H. Mounted Filters--Duplex--Part 1 Of 2 -- Type 3
6N***32Filter Group-Engine Oil; -Duplex Lh1
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6n5032 Oil Lines Group--L.H. Mounted Filters--Duplex--Part 2 Of 2 -- Type 2
6N***32Filter Group-Engine Oil; -Duplex Lh1
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6n5032 Oil Lines Group--L.H. Mounted Filters--Duplex--Part 2 Of 2--Type 3
6N***32Filter Group-Engine Oil; -Duplex Lh1
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6n5032 Filter Gp--Engine Oil--L. H.--Duplex--Part 1 Of 2
6N***32Filter Group-Engine Oil; -Duplex Lh1
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6n5032 Oil Lines Group--L.H. Mounted Filters--Duplex--Part 1 Of 2 -- Type 2
6N***32Filter Group-Engine Oil; -Duplex Lh1
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6n5032 Oil Lines Group--L.H. Mounted Filters--Duplex--Part 1 Of 2--Type 1
6N***32Filter Group-Engine Oil; -Duplex Lh1
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6n0386 Filter Gp--Oil--Part 1 Of 2
6n386 Oil Filter Group--Duplex R.H.--Part 1 Of 2--Type 3
6n386 Oil Filter Group--Duplex R.H.--Part 1 Of 2--Type 1
6n386 Oil Filter Group--Duplex R.H.--Part 2 Of 2--Type 2
6n386 Oil Filter Group--Duplex R.H.--Part 2 Of 2--Type 1
6n386 Oil Filter Group--Duplex R.H.--Part 2 Of 2--Type 3
6n0386 Filter Gp--Oil--Part 2 Of 2
4n2759 Oil Filter Group
6n386 Oil Filter Group--Duplex R.H.--Part 1 Of 2--Type 2
8n3920 Oil Level Gauge Group--L.H. Rear
8N***20Gauge Group-Oil Level (Dipstick); -Lh, Rear-Engine1
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4n2353 Oil Level Gauge Group
4N***53Gauge Group-Oil Level (Dipstick); -Engine1
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4n2353 Gauge Gp-Oil Level
4N***53Gauge Group-Oil Level (Dipstick); -Engine1
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4w1548 Gauge Gp-Oil Level
4W***48Gauge Group-Oil Level (Dipstick); -Engine1
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5n3873 Lines Gp--Oil Drain
6n0641 Oil Lines Gp--Part 1 Of 2
4w1545 Lines Gp--Engine Oil
6n641 Oil Lines Group--Part 2 Of 2
6n0641 Oil Lines Gp--Part 2 Of 2
6n641 Oil Lines Group--Part 1 Of 2
6n4121 Oil Lines Group--L.H. Mounted Filter
4n3705 Lines Gp--Turbocharger Oil
4N***05Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group1
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6n4572 Lines Gp--Turbocharger Oil
6n6888 Oil Level Gauge Group--L.H. Rear
7n863 Oil Level Gauge Group--L.H. Rear
8n3919 Oil Level Gauge Group--L.H. Rear--Replaced By 8n3920 Shown On
4w1783 Pan Ar-Oil-High Capacity
4W***40Pan Group-Oil; -Engine1
4W***44Cover Group-Lower Structure1
4W***45Lines Group-Engine Oil1
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4n1733 Pan Gp-Engine Oil
4w1540 Pan Gp-Oil
4n1733 Oil Pan Group
4n8734 Oil Pump Gp*R
4N***34Pump Group-Engine Oil; Engine Oil Pump Group1
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Marine Gear
5n2873 Marine Gear Oil Cooler Group--Part 2 Of 2--Type 1
5n2873 Marine Gear Oil Cooler Group--Part 1 Of 2--Type 2
5n2873 Marine Gear Oil Cooler Group--Part 2 Of 2--Type 2
5n2873 Marine Gear Oil Cooler Group--Part 1 Of 2--Type 1
3n8478 Clutch Cylinder Assembly
3n8952 Marine Gear Lock And Sealing Kit
1L***38Gasket-Pump; (Oil Pump To Manifold Assembly)1
1L***47Ring-- Retaining-- Forward & Reverse Clutch Spider To Pinion2
1L***93Gasket --Selector Valve Cover1
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3n8955 Lock And Sealing Kit--Part 1 Of 2
0L***64Lock --To Reverse Driven Gear Splash Pan; -- To Reverse Driven Gear Splash Pan4
1L***38Gasket-Pump; (Oil Pump To Manifold Assembly)1
1L***47Ring-- Retaining-- Forward & Reverse Clutch Spider To Pinion2
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3n8955 Lock And Sealing Kit--Part 2 Of 2
3N***17Lock-- Forward & Reverse Pinion Bearing Retainer6
3N***55Kit-Lock & Sealing; -Marine Transmission1
6L***63Shim; (0.254-mm Thk)(Output Flange To Shaft)2
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3n8954 Marine Society Spare Parts Kit--Mg514--4.05 & 6.0 : 1 Ratio
1B***07Nut 1.6 cm(.64 In.) Thick8
1M***24Race And Roller Assembly Output Shaft Front1
2B***12Bolt-Special8
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3n8951 Marine Society Spare Parts Kit--Mg514--2.00, 2.50, 3.00
1B***09Nut,Plain,Hexagon Radiator Guard8
1M***24Race And Roller Assembly Output Shaft Front1
2H***45Bolt -Generator To Base8
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3n8958 Lock And Sealing Kit--Part 2 Of 2
3N***17Lock-- Forward & Reverse Pinion Bearing Retainer6
3N***93Gasket Forward Shaft Rear Cover1
3N***94Gasket-Cover1
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3n8958 Lock And Sealing Kit--Part 1 Of 2
0L***64Lock --To Reverse Driven Gear Splash Pan; -- To Reverse Driven Gear Splash Pan4
1N***90Gasket Oil Pump To Manifold Assembly1
1N***02Seal Plug On Manifold Assembly1
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3n7112 Marine Gear Arrangement--Mg514--4.50 : 1 Ratio
3N***50Marine Gear Group1
3N***63Marine Gear Mounting Group1
3N***12Marine Gear Arrangement1
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3n7108 Marine Gear Arrangement--Mg514--2.00 : 1 Ratio
3N***26Marine Gear Group1
3N***64Marine Gear Mounting Group1
3N***08Marine Gear Arrangement1
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3n7113 Marine Gear Arrangement--Mg514--6.00 : 1 Ratio
3N***52Marine Gear Group1
3N***63Marine Gear Mounting Group1
3N***13Marine Gear Arrangement1
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3n7110 Marine Gear Arrangement--Mg514--3.00 : 1 Ratio
3N***28Marine Gear Group1
3N***64Marine Gear Mounting Group1
3N***10Marine Gear Arrangement1
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3n5856 Marine Gear Arrangement--Mg514m--4.50 : 1 Ratio
3N***56Transmission Group-Marine; Marine Gear Group1
3N***43Mounting Group-Marine Tmsn; Mounting Group1
3N***56Marine Gear Arrangement1
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3n5857 Marine Gear Arrangement--Mg514m--6.00 : 1 Ratio
3N***57Transmission Group-Marine; Marine Gear Group1
3N***43Mounting Group-Marine Tmsn; Mounting Group1
3N***57Marine Gear Arrangement1
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3n7109 Marine Gear Arrangement--Mg514--2.50 : 1 Ratio
3N***27Marine Gear Group1
3N***64Marine Gear Mounting Group1
3N***09Marine Gear Arrangement1
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3n7111 Marine Gear Arrangement--Mg514--3.50 : 1 Ratio
3N***49Marine Gear Group1
3N***64Marine Gear Mounting Group1
3N***11Marine Gear Arrangement1
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3n4626 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 3 Of 4
3n4549 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 2 Of 3
3n4628 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 3 Of 4
3n4552 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 2 Of 3
3n4627 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 1 Of 4
3n4552 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 1 Of 3
3n4627 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 2 Of 4
3n4549 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 3 Of 3
3n4552 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 3 Of 3
3n4550 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 3 Of 3
3n4628 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 4 Of 4
3n4627 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 3 Of 4
3n4626 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 1 Of 4
3n4550 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 1 Of 3
3n4628 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 1 Of 4
3n4626 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 4 Of 4
3n4549 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 1 Of 3
3n4626 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 2 Of 4
3n4627 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 4 Of 4
3n4628 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 2 Of 4
3n4550 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 2 Of 3
3n6063 Marine Gear Mounting Group--Type 2
3n6063 Marine Gear Mounting Group--Type 1
3n6064 Marine Gear Mounting Group
3n8957 Marine Society Spare Parts Kit--Mg514m--4.5 & 6.0 : 1 Ratio
1B***07Nut 1.6 cm(.64 In.) Thick8
1M***24Race And Roller Assembly Output Shaft Front1
2B***12Bolt-Special8
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5n1718 Marine Society Spare Parts Kit--Propulsion--Part 2 Of 2
1B***05Key; (Woodruff)1
1H***23Packing,Preformed Part Of Kit P/N 5r***251
1M***77Seal-O-Ring1
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5n2891 Marine Society Spare Parts Kit--Propulsion--Part 2 Of 2
1B***05Key; (Woodruff)1
1H***23Packing,Preformed Part Of Kit P/N 5r***251
1M***77Seal-O-Ring1
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5n1717 Marine Society Spare Parts Kit--Propulsion--Part 2 Of 2
1B***05Key; (Woodruff)1
1H***23Packing,Preformed Part Of Kit P/N 5r***251
1M***77Seal-O-Ring1
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5n2893 Marine Society Spare Parts Kit--Propulsion--Part 2 Of 2
1B***05Key; (Woodruff)1
1H***23Packing,Preformed Part Of Kit P/N 5r***251
1M***77Seal-O-Ring1
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5n2891 Marine Society Spare Parts Kit--Propulsion--Part 1 Of 2
00***14Ring-Retaining; (Internal)2
1M***01Pin Connecting Rod To Piston1
2A***29Lock,Valve Spring R Cylinder Head24
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5n1718 Marine Society Spare Parts Kit--Propulsion--Part 1 Of 2
00***14Ring-Retaining; (Internal)2
1M***01Pin Connecting Rod To Piston1
2A***29Lock,Valve Spring R Cylinder Head24
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5n2893 Marine Society Spare Parts Kit--Propulsion--Part 1 Of 2
00***14Ring-Retaining; (Internal)2
2A***29Lock,Valve Spring R Cylinder Head24
2H***50Bolt Head Assembly To Cylinder Block; Bolt-Head Assembly To Cylinder Block6
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5n1717 Marine Society Spare Parts Kit--Propulsion--Part 1 Of 2
00***14Ring-Retaining; (Internal)2
2A***29Lock,Valve Spring R Cylinder Head24
2H***50Bolt Head Assembly To Cylinder Block; Bolt-Head Assembly To Cylinder Block6
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5n6738 Marine Gear Mounting Group--Deep Sump
3n5843 Marine Gear Mounting Group
3N***43Mounting Group-Marine Tmsn; Mounting Group1
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5n6737 Marine Gear Mounting Group--Shallow Sump
3n5843 Marine Gear Mounting Gp-Type 3
3N***43Mounting Group-Marine Tmsn; Mounting Group1
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3n5843 Marine Gear Mounting Group--Type 2
3N***43Mounting Group-Marine Tmsn; Mounting Group1
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9g6267 Marine Gear Group--Mg514c--2.50 : 1 Ratio--Part 2 Of 4--Type 1
5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 3 Of 4--Type 1
5N***22Transmission Group-Marine; Marine Gear Group1
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5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 3 Of 4--Type 3
5N***22Transmission Group-Marine; Marine Gear Group1
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5n4427 Marine Gear Group--Mg514--6 : 1 Ratio--Part 2 Of 5--Type 3
5N***27Transmission Group-Marine; Marine Gear Group1
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9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 3 Of 5--Type 1
9g6269 Marine Transmission Gp--Part 4 Of 4--Mg514c--3.50 : 1 Ratio
5n4424 Marine Gear Group--Mg514-3.00 : 1 Ratio--Part 2 Of 4--Type 2
5N***24Transmission Group-Marine; Marine Gear Group1
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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 1 Of 5--Type 2
3n5656 Marine Gear Group--Mg514m--4.50 : 1 Ratio--Part 5 Of 5--Type 1
3N***56Transmission Group-Marine; Marine Gear Group1
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3n5656 Marine Gear Group--Mg514m--4.50 : 1 Ratio--Part 3 Of 5--Type 2
3N***56Transmission Group-Marine; Marine Gear Group1
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9g6266 Marine Gear Group--Mg514c--2.00 : 1 Ratio--Part 3 Of 4--Type 1
9g6267 Marine Gear Group--Mg514c--2.50 : 1 Ratio--Part 1 Of 4--Type 1
9g6269 Marine Transmission Gp--Part 3 Of 4--Mg514c--3.50 : 1 Ratio
9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 4 Of 4--Type 3
9g6267 Marine Gear Group--Mg514c--2.50 : 1 Ratio--Part 4 Of 4--Type 1
5n4423 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 2 Of 4--Type 3
5N***23Transmission Group-Marine; Marine Gear Group1
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9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 3 Of 4--Type 3
9g6269 Marine Gear Group--Mg514c--3.50 : 1 Ratio--Part 1 Of 4--Type 1
5n4425 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 3 Of 4--Type 3
5N***25Transmission Group-Marine; Marine Gear Group1
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9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 2 Of 4--Type 3
3n5656 Marine Gear Gp--Mg514m--4.50 : 1 Ratio--Part 1 Of 5--Type 3
3N***56Transmission Group-Marine; Marine Gear Group1
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3n5657 Marine Gear Gp-Mg514m-6.00 : 1 Ratio-Part 4 Of 5-Type 3
3N***57Transmission Group-Marine; Marine Gear Group1
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9g6269 Marine Transmission-Gp-Mg514c-3.50 : 1 Ratio-Part 1 Of 4-Type 2
5n4424 Marine Gear Group--Mg514-3.00 : 1 Ratio--Part 1 Of 4--Type 2
5N***24Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1 Ratio--Part 2 Of 4--Type 3
5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 1 Of 3--Type 2
5N***26Transmission Group-Marine; Marine Gear Group1
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3n5656 Marine Gear Group--Mg514m--4.50 : 1 Ratio--Part 1 Of 5--Type 2
3N***56Transmission Group-Marine; Marine Gear Group1
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9g6266 Marine Gear Group--Mg514c--2.00 : 1 Ratio--Part 1 Of 4--Type 1
9g6267 Marine Transmission Gp--Part 3 Of 4--Mg514c--2.50 : 1 Ratio
9g6268 Marine Transmission Gp-Part 2 Of 4-Mg514c-3.00 : 1 Ratio
9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 1 Of 5--Type 1
5n4425 Marine Gear Group--Mg514-3.50 : 1 Ratio--Part 2 Of 4--Type 2
5N***25Transmission Group-Marine; Marine Gear Group1
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3n5657 Marine Gear Group--Mg514m--6.00 : 1 Ratio--Part 4 Of 5--Type 1
3N***57Transmission Group-Marine; Marine Gear Group1
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5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 1 Of 3--Type 1
5N***26Transmission Group-Marine; Marine Gear Group1
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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 5 Of 5--Type 1
9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 5 Of 5--Type 2
9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 4 Of 5--Type 1
3n5656 Marine Gear Group--Mg514m--4.50 : 1 Ratio--Part 5 Of 5--Type 2
3N***56Transmission Group-Marine; Marine Gear Group1
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5n4427 Marine Gear Group--Mg514--6 : 1 Ratio--Part 4 Of 5--Type 3
5N***27Transmission Group-Marine; Marine Gear Group1
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9g6267 Marine Transmission--Gp--Part 1 Of 4--Mg514c--2.50 : 1 Ratio
3n5657 Marine Gear Group--Mg514m--6.00 : 1 Ratio--Part 5 Of 5--Type 2
3N***57Transmission Group-Marine; Marine Gear Group1
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3n5657 Marine Gear Gp-Mg514m-6.00 : 1 Ratio-Part 5 Of 5-Type 3
3N***57Transmission Group-Marine; Marine Gear Group1
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9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 2 Of 4--Type 3
3n5657 Marine Gear Group--Mg514m--6.00 : 1 Ratio--Part 1 Of 5--Type 2
3N***57Transmission Group-Marine; Marine Gear Group1
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5n4424 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 3 Of 4--Type 3
5N***24Transmission Group-Marine; Marine Gear Group1
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9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 5 Of 5--Type 1
9g6266 Marine Gear Group--Mg514c--2.00 : 1 Ratio--Part 4 Of 4--Type 1
9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 1 Of 4--Type 2
9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 4 Of 5--Type 2
5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 1 Of 5--Type 3
5N***26Transmission Group-Marine; Marine Gear Group1
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5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 4 Of 4--Type 3
5N***22Transmission Group-Marine; Marine Gear Group1
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5n4425 Marine Gear Group--Mg514-3.50 : 1 Ratio--Part 4 Of 4--Type 2
5N***25Transmission Group-Marine; Marine Gear Group1
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3n5656 Marine Gear Gp--Mg514m--4.50 : 1 Ratio--Part 4 Of 5--Type 3
3N***56Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Transmission Gp-Part 1 Of 4-Mg514c-3.00 : 1 Ratio
9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 1 Of 4--Type 3
9g6269 Marine Gear Group--Mg514c--3.50 : 1 Ratio--Part 2 Of 4--Type 1
5n4425 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 2 Of 4--Type 3
5N***25Transmission Group-Marine; Marine Gear Group1
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9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 2 Of 4--Type 3
5n4423 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 2 Of 4--Type 2
5N***23Transmission Group-Marine; Marine Gear Group1
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5n4427 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 3 Of 3--Type 1
5N***27Transmission Group-Marine; Marine Gear Group1
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5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 3 Of 4--Type 2
5N***22Transmission Group-Marine; Marine Gear Group1
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5n4423 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 3 Of 4--Type 3
5N***23Transmission Group-Marine; Marine Gear Group1
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9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 3 Of 4--Type 2
3n5657 Marine Gear Gp-Mc514m-6.00 : 1 Ratio-Part 1 Of 5-Type 3
3N***57Transmission Group-Marine; Marine Gear Group1
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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 2 Of 5--Type 2
9g6266 Marine Gear Group--Mg514c--2.00 : 1 Ratio--Part 2 Of 4--Type 1
3n5656 Marine Gear Group--Mg514m--4.50 : 1 Ratio--Part 4 Of 5--Type 2
3N***56Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1 Ratio--Part 4 Of 4--Type 2
9g6266 Marine Transmission Gp--Part 4 Of 4--Mg514c--2.00 : 1 Ratio
5n4427 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 3 Of 3--Type 2
5N***27Transmission Group-Marine; Marine Gear Group1
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5n4427 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 1 Of 3--Type 2
5N***27Transmission Group-Marine; Marine Gear Group1
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5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 1 Of 4--Type 1
5N***22Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Gear Group--Mg514c--3.00 : 1 Ratio--Part 4 Of 4--Type 1
5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 3 Of 3--Type 2
5N***26Transmission Group-Marine; Marine Gear Group1
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9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 3 Of 4--Type 3
5n4427 Marine Gear Group--Mg514--6 : 1 Ratio--Part 5 Of 5--Type 3
5N***27Transmission Group-Marine; Marine Gear Group1
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9g6269 Marine Transmission Gp--Part 2 Of 4-- Mg514c--3.50 : 1 Ratio
5n4427 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 2 Of 3--Type 2
5N***27Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Transmission Gp-Part 3 Of 4-Mg514c-3.00 : 1 Ratio
5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 2 Of 3--Type 1
5N***26Transmission Group-Marine; Marine Gear Group1
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9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 2 Of 4--Type 2
9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1 Ratio--Part 1 Of 4--Type 2
5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 1 Of 4--Type 3
5N***22Transmission Group-Marine; Marine Gear Group1
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3n5657 Marine Gear Group--Mg514m--6.00 : 1 Ratio--Part 1 Of 5--Type 1
3N***57Transmission Group-Marine; Marine Gear Group1
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5n4425 Marine Gear Group--Mg514-3.50 : 1 Ratio--Part 1 Of 4--Type 2
5N***25Transmission Group-Marine; Marine Gear Group1
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9g6269 Marine Gear Group--Mg514c--3.50 : 1 Ratio--Part 3 Of 4--Type 1
5n4425 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 4 Of 4--Type 1
5N***25Transmission Group-Marine; Marine Gear Group1
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5n4423 Marine Gear Group--Mg514-2.50 : 1 Ratio--Part 1 Of 4--Type 2
5N***23Transmission Group-Marine; Marine Gear Group1
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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 3 Of 5--Type 2
9g6266 Marine Transmission Gp--4--Part 3 Of 4 Mg514c--2.00 : 1 Ratio
3n5656 Marine Gear Group--Mg514m--4.50 : 1 Ratio--Part 2 Of 5--Type 2
3N***56Transmission Group-Marine; Marine Gear Group1
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9g6266 Marine Transmission Gp--Part 2 Of 4 Mg514c-2.00 : 1 Ratio
5n4427 Marine Gear Group--Mg514--6 : 1 Ratio--Part 3 Of 5--Type 3
5N***27Transmission Group-Marine; Marine Gear Group1
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5n4424 Marine Gear Group--Mg514-3.00 : 1 Ratio--Part 3 Of 4--Type 2
5N***24Transmission Group-Marine; Marine Gear Group1
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3n5656 Marine Gear Group--Mg514m--4.50 : 1 Ratio--Part 3 Of 5--Type 1
3N***56Transmission Group-Marine; Marine Gear Group1
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9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 4 Of 4--Type 2
5n4425 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 2 Of 4--Type 1
5N***25Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1 Ratio--Part 1 Of 4--Type 3
9g6268 Marine Transmission Gp-Mg514c-3.00 : 1 Ratio-Part 4 Of 4-Type 3
5n4424 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 2 Of 4--Type 1
5N***24Transmission Group-Marine; Marine Gear Group1
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9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 4 Of 4--Type 2
5n4424 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 3 Of 4--Type 1
5N***24Transmission Group-Marine; Marine Gear Group1
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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 5 Of 5--Type 2
3n5656 Marine Gear Group--Mg514m--4.50 : 1 Ratio--Part 2 Of 5--Type 1
3N***56Transmission Group-Marine; Marine Gear Group1
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5n4425 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 1 Of 4--Type 3
5N***25Transmission Group-Marine; Marine Gear Group1
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9g6267 Marine Gear Group--Mg514c--2.50 : 1 Ratio--Part 3 Of 4--Type 1
5n4427 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 1 Of 3--Type 1
5N***27Transmission Group-Marine; Marine Gear Group1
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9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 1 Of 4--Type 3
5n4424 Marine Gear Group--Mg514-3.00 : 1 Ratio--Part 4 Of 4--Type 2
5N***24Transmission Group-Marine; Marine Gear Group1
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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 2 Of 5--Type 1
3n5657 Marine Gear Gp-Mg514m-6.00 : 1 Ratio-Part 2 Of 5-Type 3
3N***57Transmission Group-Marine; Marine Gear Group1
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5n4425 Marine Gear Group--Mg514-3.50 : 1 Ratio--Part 3 Of 4--Type 2
5N***25Transmission Group-Marine; Marine Gear Group1
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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 4 Of 5--Type 2
9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 2 Of 5--Type 2
5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 4 Of 5--Type 3
5N***26Transmission Group-Marine; Marine Gear Group1
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3n5657 Marine Gear Gp-Mg514m-6.00 : 1 Ratio-Part 3 Of 5-Type 3
3N***57Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Gear Group--Mg514c--3.00 : 1 Ratio--Part 2 Of 4--Type 1
9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 4 Of 4--Type 3
5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 2 Of 5--Type 3
5N***26Transmission Group-Marine; Marine Gear Group1
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3n5657 Marine Gear Gp-Mg514m-6.00 : 1 Ratio-Part 2 Of 5-Type 2
3N***57Transmission Group-Marine; Marine Gear Group1
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3n5657 Marine Gear Group--Mg514m--6.00 : 1 Ratio--Part 4 Of 5--Type 2
3N***57Transmission Group-Marine; Marine Gear Group1
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5n4425 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 3 Of 4--Type 1
5N***25Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Gear Group--Mg514c--3.00 : 1 Ratio--Part 1 Of 4--Type 1
5n4423 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 4 Of 4--Type 3
5N***23Transmission Group-Marine; Marine Gear Group1
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3n5656 Marine Gear Gp--Mg514m--4.50 : 1 Ratio--Part 2 Of 5--Type 3
3N***56Transmission Group-Marine; Marine Gear Group1
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9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 1 Of 5--Type 1
9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 1 Of 4--Type 3
5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 2 Of 4--Type 2
5N***22Transmission Group-Marine; Marine Gear Group1
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5n4424 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 2 Of 4--Type 3
5N***24Transmission Group-Marine; Marine Gear Group1
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5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 3 Of 3--Type 1
5N***26Transmission Group-Marine; Marine Gear Group1
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3n5656 Marine Gear Gp--Mg514m--4.50 : 1 Ratio--Part 3 Of 5--Type 3
3N***56Transmission Group-Marine; Marine Gear Group1
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5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 3 Of 5--Type 3
5N***26Transmission Group-Marine; Marine Gear Group1
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9g6267 Marine Transmission Gp--Part 4 Of 4--Mg514c--2.50 : 2 Ratio
9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1 Ratio--Part 3 Of 4--Type 3
9g6269 Marine Gear Group--Mg514c--3.50 : 1 Ratio--Part 4 Of 4--Type 1
9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 4 Of 4--Type 2
9g6268 Marine Gear Group--Mg514c--3.00 : 1 Ratio--Part 3 Of 4--Type 1
5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 4 Of 4--Type 2
5N***22Transmission Group-Marine; Marine Gear Group1
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9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 3 Of 4--Type 2
5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 4 Of 4--Type 1
5N***22Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Transmission Gp-Part 4 Of 4-Mg514c-3.00 : 1 Ratio
5n4424 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 4 Of 4--Type 1
5N***24Transmission Group-Marine; Marine Gear Group1
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9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 2 Of 4--Type 2
5n4423 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 1 Of 4--Type 1
5N***23Transmission Group-Marine; Marine Gear Group1
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5n4427 Marine Gear Group--Mg514--6 : 1 Ratio--Part 1 Of 5--Type 3
5N***27Transmission Group-Marine; Marine Gear Group1
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9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 2 Of 5--Type 1
3n5657 Marine Gear Group--Mg514m--6.00 : 1 Ratio--Part 5 Of 5--Type 1
3N***57Transmission Group-Marine; Marine Gear Group1
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9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 3 Of 4--Type 2
5n4423 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 4 Of 4--Type 1
5N***23Transmission Group-Marine; Marine Gear Group1
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5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 2 Of 4--Type 1
5N***22Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1 Ratio--Part 3 Of 4--Type 2
3n5656 Marine Gear Group--Mg514m--4.50 : 1 Ratio--Part 4 Of 5--Type 1
3n5657 Marine Gear Group--Mg514m--6.00 : 1 Ratio--Part 3 Of 5--Type 2
3N***57Transmission Group-Marine; Marine Gear Group1
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5n4425 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 1 Of 4--Type 1
5N***25Transmission Group-Marine; Marine Gear Group1
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9g6267 Marine Transmission Gp--Part 2 Of 4--Mg514c--2.50 : 1 Ratio
9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 2 Of 4--Type 2
5n4424 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 1 Of 4--Type 3
5N***24Transmission Group-Marine; Marine Gear Group1
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5n4427 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 2 Of 3--Type 1
5N***27Transmission Group-Marine; Marine Gear Group1
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3n5656 Marine Gear Group--Mg514m--4.50 : 1 Ratio--Part 1 Of 5--Type 1
3N***56Transmission Group-Marine; Marine Gear Group1
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9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 1 Of 5--Type 2
3n5657 Marine Gear Gp-Mg514m-6.00 : 1 Ratio-Part 2 Of 5-Type 1
3N***57Transmission Group-Marine; Marine Gear Group1
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5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 2 Of 4--Type 3
5N***22Transmission Group-Marine; Marine Gear Group1
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5n4423 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 2 Of 4--Type 1
5N***23Transmission Group-Marine; Marine Gear Group1
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9g6269 Marine Transmission Gp--Part 1 Of 4--Mg514c--3.50 : 1 Ratio
9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 3 Of 4--Type 3
9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 4 Of 4--Type 3
9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 3 Of 5--Type 1
5n4423 Marine Gear Group--Mg514-2.50 : 1 Ratio--Part 4 Of 4--Type 2
5N***23Transmission Group-Marine; Marine Gear Group1
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5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 2 Of 3--Type 2
5N***26Transmission Group-Marine; Marine Gear Group1
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9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 1 Of 4--Type 2
9g6266 Marine Transmission Gp--Part 1 Of 4 Mg514c--2.00 : 1 Ratio
3n5657 Marine Gear Group--Mg514m--6.00 : 1 Ratio--Part 3 Of 5--Type 1
3N***57Transmission Group-Marine; Marine Gear Group1
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3n5656 Marine Gear Gp--Mg514m--4.50 : 1 Ratio--Part 5 Of 5--Type 3
3N***56Transmission Group-Marine; Marine Gear Group1
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5n4423 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 1 Of 4--Type 3
5N***23Transmission Group-Marine; Marine Gear Group1
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5n4425 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 4 Of 4--Type 3
5N***25Transmission Group-Marine; Marine Gear Group1
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5n4424 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 4 Of 4--Type 3
5N***24Transmission Group-Marine; Marine Gear Group1
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5n4426 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 5 Of 5--Type 3
5N***26Transmission Group-Marine; Marine Gear Group1
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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 4 Of 5--Type 1
5n4423 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 3 Of 4--Type 2
5N***23Transmission Group-Marine; Marine Gear Group1
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5n4422 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 1 Of 4--Type 2
5N***22Transmission Group-Marine; Marine Gear Group1
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5n4424 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 1 Of 4--Type 1
5N***24Transmission Group-Marine; Marine Gear Group1
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9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 3 Of 5--Type 2
9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1--Part 2 Of 4--Type 2
5n4423 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 3 Of 4--Type 1
5N***23Transmission Group-Marine; Marine Gear Group1
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6t1823 Control Valve Assembly
3n8525 Modulating Control Valve Assembly
3n8515 Pressure And Regulator Valve Assembly
7l7310 Selector Valve Assembly
9g6415 Selector Valve Assembly
2l1389 Trolling Valve Group
Service Equipment And Supplies
3n8268 Instrument Panel Box Group--Type 2
3n8268 Instrument Panel Box Group--Type 1
3n8700 Premium Instrument Panel, Mounting & Connections
3N***91Thermocouple1
3N***12Pyrometer Group; Pyrometer-Single1
3N***30Plate-Information; (Premium Instrument Panel)1
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5n3790 Clutch Assembly
5n3789 Clutch Assembly
5n3980 Clutch Group
5n7330 Clutch Group--Type 1
5n7329 Clutch Group--Type 2
5n4156 Clutch Group--Replaced By 5n1730 Shown On Page 232b
5n7497 Clutch Group--Provided Field Replacement For 5n3980 Shown On Page 230f-1
5n7329 Clutch Group--Type 1
5n7330 Clutch Group--Type 2
5n7170 Clutch Assembly
5n7169 Clutch Assembly
5n7496 Clutch Group
5n6479 Clutch Group
5n2853 Clutch Group--Replaced By 5n1730 Shown On Page 232b
5n1729 Clutch Group
5n4155 Clutch Group--Replaced By 5n1729 Shown On Page 231b
5n2851 Clutch Group--Replaced By 5n1729 Shown On Page 231b
5n1730 Clutch Group
3n9016 Instrument Panel Cover Group
3N***16Cover Group-Instrument Panel; Instrument Panel Cover Group1
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7n8750 Drive Gp.-Auxiliary-3 Groove Pulley
4n8505 Drive Gp-Auxiliary-R.H.-Rear
1n3270 Drive Gp-Auxiliary-L.H. Front
7n8881 Drive Gp-Auxiliary-2 Groove Pulley
4n8505 Auxiliary Drive Group--R.H. Rear--Type 1
4n8505 Drive Gp-Auxiliary-R.-H.-Rear
7n8750 Drive Gp-Auxiliary-3 Groove Pulley
4n8479 Auxiliary Drive Group
4n8509 Hydraulic Pump Drive Group--L.H. Rear And L.H. Front
7n2645 Pump Drive Group
7n2642 Pump Drive Group
7n2419 Tachometer Drive Group--Dual--Type 1
6n8791 Drive Gp-Tachometer
6N***91Drive Group-Tachometer; Drive Gp-Tachometer-Single1
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7n2419 Tachometer Drive Group--Dual--Type 2
6n226 Tachometer Drive Group
9n16 Tachometer Drive Group
9N***16Drive Group-Tachometer; Tachometer Drive Group1
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4n1402 Drive Gp-Tachometer
4N***02Drive Group-Tachometer; Tachometer Drive Group-Single1
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3n7984 Electric Tachometer Group--24 Volt
3n8161 Electric Tachometer Group--32 Volt
6n3535 Front Power Take-Off Group--Single Plate Clutch--Type 1
6n3535 Front Power Take-Off Group--Single Plate Clutch--Type 3
6n3535 Front Power Take-Off Group--Single Plate Clutch--Type 2
6n3188 Front Power Take-Off Group--Two Plate Clutch--Type 1
6n3188 Front Power Take-Off Group--Two Plate Clutch--Type 2
6n3188 Front Power Take-Off Group--Two Plate Clutch--Type 3
Gasket Kits
5P***47Water Pump0
5P***90Complete Engine Overhaul0
5P***91Complete Engine Overhaul0
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3n9012 Ammeter Gauge Group
3N***12Gauge Group-Ammeter; (60-Ampere)1
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3n9011 Marine Gear Oil Gauge Group
3N***11Gauge Group-Marine Gear Oil; Marine Gear Oil Gauge Group1
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3n9008 Temperature Gauge Group--Single
3N***08Gauge Group-Temperature; Temperature Gauge Group-Single1
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5n7022 Instrument Panel Lines Group
5n2501 Sound Isolator Group
5n7021 Instrument Panel Lines Gp
5n5769 Instrument Panel Lines Gp-Type 2
5n5769 Instrument Panel Lines Group--Type 1
5n7023 Instrument Panel Lines Group
7n3057 Oil Supply Lines Group--Front L.H.
7n3055 Lines Gp-Oil Supply-Rear-L.H.
7n3055 Oil Supply Lines Group--Rear L.H.--Type 1
5n8757 Magnetic Pickup Group
5N***57Magnetic Pickup Group; Magnetic Pick-Up Group1
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7n9687 Manifold Heat Shield Group--Rear L.H.
7n2418 Hour Meter Group
4n2328 Service Meter Group
4N***28Meter Group-Service; Meter Group-Service1
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8n7437 Instrument Panel Mounting Gp-L.H.-Duplex
8N***37Mounting Group-Instrument Panel; Instrument Panel Mounting Group-L.H.1
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6n3549 Instrument Panel Mounting Gp--Type 3
6N***49Mounting Group-Instrument Panel1
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6n3806 Mounting Gp-Marine Gear Gauge
6N***06Mounting Group-Instrument Panel1
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6n3806 Marine Gear Gauge Mounting Group--Type 1
6N***06Mounting Group-Instrument Panel1
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6n3549 Instrument Panel Mounting Group--Type 1
6N***49Mounting Group-Instrument Panel1
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6n3549 Instrument Panel Mounting Group--Type 2
6N***49Mounting Group-Instrument Panel1
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6n3806 Marine Gear Gauge Mounting Group--Type 2
6N***06Mounting Group-Instrument Panel1
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5n2670 Hydraulic Pump Drive Mounting Group
7l4535 Tachometer Mounting Group
7L***35Mounting Group-Tachometer; Tachometer Mounting Group[[751
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7l4535 Tachometer Mounting Group--Type 2
7L***35Mounting Group-Tachometer; Tachometer Mounting Group[[751
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Name Plates And Transfer
3N***90Plate Serial Number; On R.H. Rear Bank Of Cylinder Block As Viewed From Rear Of Engine1
4N***75Film--Caterpillar On Upper Front Center1
6N***56Film-Instruction; (Glow Plug)(Glow Plug Instruction)1
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3n6642 Single Instrument Panel Group--24/32 Volt--Electrical Instruments-- Type 3
6n9038 Instrument Panel Group--Type 2
3n6641 Dual Instrument Panel Group--24 Or 32 Volt--Electrical Instruments--Type 2
5n8281 Panel Gp--Instrument--Dual--24/32 Volt
3n8553 Instrument Panel Group--Type 2--Replaced By 5n8286
3N***53Panel Group-Instrument; Panel Group1
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6n9893 Instrument Panel Group-L.H.-4 Gauge-Type 3
2w5991 Panel Gp--Instrument--Single
2W***91Panel Group-Instrument; -Single1
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3n8553 Instrument Panel Group--Type 1--Replaced By 5n8286
3N***53Panel Group-Instrument; Panel Group1
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6n9086 Instrument Panel Group--L.H.--4 Gauge--Type 2
3n6874 Single Instrument Panel Group--12 Volt--Mechanical Instruments--
3n6873 Single Instrument Panel Group--12 Volt--Electrical Instruments
3n6642 Single Instrument Panel Group--24 Or 32 Volt--Electrical Instruments-- Type 2
3n6641 Dual Instrument Panel Group--24 Or 32 Volt--Electrical Instruments-- Type 1
3n6641 Panel Gp--Instrument
6n9038 Panel Gp--Instrument--R.H.
3n6874 Panel Gp--Instrument--Single
6n9893 Instrument Panel Group--L.H.--4 Gauge--Type 2
6n9038 Instrument Panel Group--Type 1
3n6641 Dual Instruments Panel Gp--24 Or 32 Volt--Electrical Instruments
6n9086 Instrument Panel Group--L.H.--4 Gauge--Type 1
6n2976 Instrument Panel Group--Mechanical Instruments--Type 2
5n8283 Panel Gp--Instrument--Single--Mechanical
6n9086 Instrument Panel Group--L.H.--4 Gauge--Type 3
6n2976 Instrument Panel Group--Mechanical Instruments--Type 1
3n6642 Panel Gp--Instrument--Single--Electrical
5n8286 Instrument Panel Group
6n9038 Instrument Panel Group--Type 3
6n9893 Panel Gp-Instrument-L.H.-4 Gauge
5n8282 Panel Gp--Instrument--Single
3n6875 Dual Instrument Panel Group--12 Volt--Mechanical Instruments
3n6642 Single Instrument Panel Group--24 Or 32 Volt--Electrical Instruments-- Type 1
6n2976 Instrument Panel Group--Mechanical Instruments--Type 3
6n9893 Instrument Panel Group--L.H.--4 Gauge--Type 1
3n6872 Dual Instrument Panel Group--12 Volt--Electrical Instruments
5n7399 Front Clutch Power Take-Off Group
5n7400 Front Power Take-Off Gp-2 Plate Clutch
5n7499 Front Power Take-Off Group--Single Plate Clutch--Type 3
5n7499 Front Power Take-Off Group--Single Plate Clutch--Type 2
5n7499 Front Power Take-Off Group--Single Plate Clutch--Type 1
4n6391 Auxiliary Drive Pulley Group--Sea Water
2n8908 Sump Pump Group
1n3299 Sump Pump Gp
6n3943 Sump Pump Group--Type 2
6n3943 Sump Pump Gp--Type 3
6n3943 Sump Pump Group--Type 1
6l5856 Bilge Pump Group
5F***82Pump Group; Centrifugal Pump1
6L***56Pump Group-Water1
8F***85Strainer As; Foot Valve And Strainer Assembly1
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8n2824 Sump Pump Mounting Group--R.H.--Replaced By 1n3299 Shown
5n6439 Power Take-Off Support Group
3n6871 Electric Tachometer Group--0--2500 R.P.M.--Type 2
3N***71Tachometer Group-Electric; Tachometer Group1
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4w4967 Tachometer Gp
3n6871 Electric Tachometer Group--0.2500 R.P.M.--Type 1
3N***71Tachometer Group-Electric; Tachometer Group1
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5n8750 Electric Tachometer Group
5N***50Tachometer Group-Electric; Tachometer Group-Electric1
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6n7938 Front Power Take-Off Group--2 Plate Clutch
5n7500 Front Power Take-Off Group--2 Plate Clutch--Type 3
5n7500 Front Power Take-Off Gp-2 Plate-Clutch-Type 1
5n7500 Front Power Take-Off Group--2 Plate Clutch--Type 2
6n7939 Front Power Take-Off Group--Single Plate Clutch
Starting And Electrical System
6n4532 Air Start Switch Group--Replaced By 8n578 Shown On Pages 131c & 131d
6n6942 Air Start Valve Group--Replaced By 8n579 Shown On Pages 131e And 131f
6n4613 Air Starter Control Valve Group--Replaced By 8n576 Shown On Pages 133c & 133d
6N***13Air Starter Control Valve Group1
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8n2430 Air Starting Motor Group--Part 2--R.H.--With L.H. Control
8n2430 Air Starting Motor Group--Part 1--R.H.--With L.H. Control
6n4018 Air Starting Motor Group--L.H.--Without Control Group--Replaced By 8n577 Shown On Pages 131a And 131b
6n4027 Air Starting Motor Group--R.H.--Without Control Group-Replaced By 8n576 Shown On Pages 133c And 133d
6n4027 Air Starting Motor Group--R.H.--Without Control Group--Type 2--Replaced By 8n576 Shown On Pages 133c And 133d
3n8797 Alarm Contactor
3N***67Contactor Group; Oil Pressure And Water Temperature Contactor Group1
3N***56Contactor Mounting Group1
3N***97Alarm Contactor1
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2n6398 Alternator Assembly-24 Volt, 35 Ampere-Field Installation
2n6397 Alternator Assembly--24 Volt, 35 Ampere
2N***97Alternator As; Alternator Assembly1
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3n7683 Alternator Group--24 Volt, 60 Ampere
4n3987 Alternator Gp--32 Volt, 60 Ampere--Part 2 Of 2*R
4N***87Alternator Group; Alternator Group1
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6t1395 Alternator Gp-24 Volt-35 Ampere
6n9294 Alternator Gp-24 Volt, 35 Ampere-Part 1 Of 2-Type 1*R
6N***94Alternator Group; (24-Volt, 35-Ampere)1
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7n9720 Alternator Gp-24 Volt, 35 Ampere-Type 1
7N***20Alternator Group; Alternator Group (Robert Bosch)1
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6n9294 Alternator Gp-24 Volt, 35 Amp-Type 3*R
3T***52Alternator Group-Charging1
6N***94Alternator Group; (24-Volt, 35-Ampere)1
7N***20Alternator Group; Alternator Group (Robert Bosch)1
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6n9294 Alternator Gp-24 Volt, 35 Ampere-Type 2*R
6N***94Alternator Group; (24-Volt, 35-Ampere)1
7N***20Alternator Group; Alternator Group (Robert Bosch)1
9G***55Alternator Group-Charging1
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3n7684 Alternator Group--30 Or 32 Volt, 60 Ampere
6n9294 Alternator Gp-24 Volt, 35 Ampere-Part 2 Of 2-Type 1*R
6N***94Alternator Group; (24-Volt, 35-Ampere)1
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7n9720 Alternator Gp-24 Volt, 35 Ampere-Type 2
7N***20Alternator Group; Alternator Group (Robert Bosch)1
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4n3987 Alternator Gp--32 Volt, 60 Ampere--Part 1 Of 2*R
4N***87Alternator Group; Alternator Group1
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9g4574 Alternator Gp--Nippondenso
9G***74Alternator Group-Charging; Alternator Group (Nippondenso)1
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4n3986 Alternator Gp--24 Volt, 60 Ampere--Part 1 Of 2*R
4N***86Alternator Group-Charging; (24-Volt, 60-Ampere)(24-Volt, 60-Ampere)1
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4n6300 Alternator Group--24 Volt, 60 Ampere--Delco-Remy
4N***86Alternator Group-Charging; (24-Volt, 60-Ampere)(24-Volt, 60-Ampere)1
4N***00Alternator Group-Charging1
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4n6299 Alternator Group--32 Volt, 60 Ampere--Delco-Remy
4N***87Alternator Group; Alternator Group1
4N***99Alternator Group-Charging1
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4n3986 Alternator Gp--24 Volt, 60 Ampere--Part 2 Of 2*R
4N***86Alternator Group-Charging; (24-Volt, 60-Ampere)(24-Volt, 60-Ampere)1
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3t6352 Alternator Group--24 Volt, 35 Ampere--Part 1 Of 2
5n5692 Alternator Gp--24 Volt, 45 Ampere--Part 1 Of 2*R
5N***92Alternator Group-Charging; Alternator Gp (See Page 25)1
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9g8255 Alternator Group--Delco-Remy--24 Volt, 35 Ampere--Part 1 Of 2
3t6352 Alternator Gp--24 Volt, 35 Ampere--Part 2 Of 2
3n5680 Alternator Group--24 Volt, 35 Ampere
9g8255 Alternator Gp-Delco-Remy-24 Volt, 35 Ampere-Part 2 Of 2
5n5692 Alternator Gp--24 Volt, 45 Ampere--Part 2 Of 2*R
5N***92Alternator Group-Charging; Alternator Gp (See Page 25)1
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Battery Chargers
7W***07Battery Charger; -12 Volt Dc For Use With Lead Acid Batteries Only0
7W***09Battery Charger; Battery Charger - 30 Volt Dc0
7W***10Battery Charger; Battery Charger - 32 Volt Dc0
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7l7871 Battery Gp-24 Volt, 172 Ampere
7L***71Battery Group; (24-Volt)(24-Volt)1
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1h1342 Starting Battery Gp-30 Volt, 204 Ampere
2n1943 Battery Group-30 Volt, 172 Ampere Hours
3n4654 Battery Group-30 Volt, 300 Ampere Hours
7l7872 Battery Gp-24 Volt, 220 Ampere
3n4653 Battery Gp-24 Volt, 300 Ampere Hour
5n8487 Automatic Start-Stop Chart--Shut-Off & Alarm
6l4040 Hydraulic Starting System
1S***11Tag1
2L***33Hydraulic Gauge1
2L***83Clamp Accumulator Clamp2
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2w8914 Contactor Gp
5n9177 Contactor Gp
5N***77Contactor Group; -Water Temperature Shut-Off1
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3n6867 Oil Pressure And Water Temperature Contactor Gp
3N***67Contactor Group; Oil Pressure And Water Temperature Contactor Group1
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3n9595 Contactor Group--Type 2
3N***95Contactor Group; Contactor Group Speed Switch1
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3n9595 Contactor Group--Type 1
3N***95Contactor Group; Contactor Group Speed Switch1
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5n8036 Contactor Gp-Time Delay-24-32 Volt
2w3050 Contactor Gp-Time Delay
3n9595 Contactor Group--Type 4
3N***95Contactor Group; Contactor Group Speed Switch1
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5n5724 Oil Pressure And Water Temperature Contactor Gp-
5n5725 Contactor Gp-Oil Pressure & Water Temperature
5N***25Contactor Group; Contactor Group Oil Pressure And Water Temperature1
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5n8036 Contactor Gp-Time Delay
3n9595 Contactor Group--Type 3
3N***95Contactor Group; Contactor Group Speed Switch1
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3n8556 Contactor Mounting Group--Type 1
3n8556 Contactor Mounting Group--Type 2
3n8556 Contactor Mounting Group--Type 3
2w6386 Time Delay Conversion Group
2L***74Terminal; (14-Ga To 16-Ga, No. 6 Screw)(Water Temp Switch)6
2L***75Terminal; (14-Ga To 16-Ga, No. 8 Screw)(Relay Switch "B" & "S")12
2L***78Terminal-Ring; (14-Ga To 16-Ga, 5/16-In Screw)6
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7w8052 Diode Gp
3n7120 Equipment Group
00***50Adapter-Pipe1
2B***95Cap Screw--Tube Assembly To Air Inlet Pipe4
2D***58Union --Valve Assembly To Tractor Brake Delivery Hose1
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2w6262 Fastener Gp
00***72Clip (" " " )3
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender1
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
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7w5088 Fastener Gp
7c9969 Fastener Gp-Part 2 Of 2
7c9969 Fastener Gp--Part 1 Of 2
5n0363 Fastener Gp
2N***62Screw-Machine; (10-24x1.25-In)2
4B***74Washer (Required Only When Bosch Alternator Is Fitted)2
5N***63Fastener Group1
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3n3892 Plug Group
3N***92Glow Plug Group; Glow Plug Group-Dummy1
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6n2865 Glow Plug Mounting Group
7c9968 Harness As-Wiring-Part 1 Of 2
7c9968 Harness As-Wiring-Part 2 Of 2
7w8007 Junction Box Gp-Part 2 Of 2
4w9602 Junction Box Gp-Part 2 Of 2
7w8003 Junction Box Gp--Part 2 Of 2
7w8003 Junction Box Gp--Part 1 Of 2
2w8903 Junction Box Gp
2W***03Junction Box Group1
7W***03Junction Box Group1
7W***51Switch Group; -Shutoff1
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7w8003 Junction Box Gp-Part 1 Of 2
2w8901 Junction Box Gp
2W***01Junction Box Group1
7W***01Junction Box Group1
7W***51Switch Group; -Shutoff1
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4w9601 Junction Box Gp
4w9602 Junction Box Gp-Part 1 Of 2
7w8007 Junction Box Gp-Part 1 Of 2
2w8907 Junction Box Gp
2W***07Junction Box Group1
6K***91Plug-Button1
7W***07Junction Box Group1
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3n859 Junction Box Gp
3N***59Junction Box Group; Junction Box Group1
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2w8905 Junction Box Gp
7w8001 Junction Box Gp
4W***01Junction Box Group1
7W***01Junction Box Group1
7W***52Diode Group1
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7w8003 Junction Box Gp-Part 2 Of 2
6n4147 Air Starting Motor Gp-Type 2
6n4148 Air Starting Motor Group--Type 1
6n4147 Air Starting Motor Group--Type 1
6n4148 Air Starting Motor Gp--Type 2
8n577 Motor Gp-Air Starting-L.H.-Part 1 Of 2
8n0578 Motor Gp-Air Starting-L.H.-Part 1 Of 2
8n579 Air Starting Motor Group--L.H.--Part 2 Of 2
8n578 Air Starting Motor Group--L.H.--Part 2 Of 2
8n0577 Motor Gp-Air Starting-L.H.-Part 2 Of 2
8n579 Motor Gp-Air Starting-L.H.-Part 1 Of 2
8n0575 Air Starting Motor Gp--R.H.--Part 1 Of 2
8n576 Air Starting Motor Group--R.H.--With Control Valve--Part 2 Of 2
8n575 Air Starting Motor Group--R.H.--Part 2 Of 2
8n576 Starting Motor Gp-Air-R.H.-With Control Valve-Part 1 Of 2
6n3226 Electric Starting Motor Group--32 Volt--Part 2 Of 2
6n3226 Electric Starting Motor Group--32 Volt--Part 1 Of 2
6n3526 Alternator And Mounting Group--24 Volt, 35 Ampere--Type 2
8n8001 Mounting Gp--Alternator
8n8000 Alternator Mounting Group--Type 2
4w5579 Mounting Gp--Alternator
6n2925 Alternator Mounting Group--Replaced By 7n9677
6n3526 Alternator Mounting Group--Type 3--Replaced By 7n9678 Shown On Page 164c
8n8000 Alternator Mounting Group--Type 1
8n8001 Alternator Mounting Group
7n9677 Alternator Mounting Group--Type 2
6n2925 Alternator Mounting Group--Type 1
7n9677 Alternator Mounting Group--Type 1
6n3526 Alternator And Mounting Group--24 Volt, 35 Ampere--Type 1
1w1806 Mounting Gp--Alternator
7n9678 Alternator Mounting Group--Type 1
7n9678 Alternator Mounting Group--Type 2
8n5626 Mounting Gp--Contactor
4w9583 Mounting Gp-Contactor
4w9580 Mounting Gp-Contactor
4w9587 Mounting Gp-Contactor
2w6387 Time Delay Mounting Group
2W***87Mounting Group-Time Delay; Time Delay Mounting Group1
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3n8283 Overspeed And Air Shut-Off Group--24 Volt
3N***78Shut-Off Group-Air; Overspeed Contactor Group1
3N***64Shut-Off Group-Air1
3N***83Overspeed And Air Shut-Off Group1
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6n1059 Glow Plug Group--4 Required--32 Volt
6n1058 Glow Plug Group--4 Required--24 Volt
6n2787 Dummy Glow Plug Group--With Harness
6N***87Plug Group-Glow; Dummy Glow Plug Group-With Harness1
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3n8663 Shut-Off Gp-Mechanical
7n236 Shut-Off Gp-Manual
3n8164 Shut-Off Gp-Air
3n8164 Air Shut-Off Group--24 Volt--Type 1
3n7478 Overspeed Contactor Group--Type 1
3N***78Shut-Off Group-Air; Overspeed Contactor Group1
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3n8164 Air Shut-Off Group--24 Volt--Type 2
3n8166 Air Shut-Off Group--24 Volt
3N***66Shut-Off Group-Air; Air Shut-Off Group--24 Volt1
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3n8284 Overspeed And Air Shut-Off Group--24 Volt
3N***78Shut-Off Group-Air; Overspeed Contactor Group1
3N***66Shut-Off Group-Air; Air Shut-Off Group--24 Volt1
3N***84Shut-Off Group-Air1
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3n8164 Air Shut-Off Group--24 Volt--Type 3
3n7478 Overspeed Contactor Group--Type 2
3N***78Shut-Off Group-Air; Overspeed Contactor Group1
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4n3402 Electrical Shut-Off Group--24 Or 32 Volt--Type 1
4n3402 Electrical Shut-Off Group--24 Or 32 Volt--Type 2
1w1223 Shut-Off Gp-Electrical-24-32 Volt
8n2202 Electrical Shut-Off Group--12 Volt Solenoid
2w6665 Shut-Off Gp-Electrical
2W***65Shut-Off Group-Electrical; -Governor1
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5n8293 Electrical Shut-Off Group--24 Or 32 Volt
5N***93Shut-Off Group-Electrical; -Governor1
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2n2489 Manual Shut-Off Group
4n1719 Solenoid Shut-Off Group--12 Volt
6n4201 Electrical Shut-Off Group--24-32 Volt
6N***01Shut-Off Group-Solenoid; Solenoid Shut-Off Group1
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6n4870 Air Silencer Group--L.H.--Type 2
6n5146 Air Silencer Group--R.H.--Type 2
6n5146 Air Silencer Group--R.H.--Type 1
6n4870 Air Silencer Group--L.H.--Type 1
3t3421 Solenoid Switch Group
3t8635 Solenoid Assembly--24 Volt
3t5051 Solenoid Assembly--32 Volt
8n621 Ether Starting Aid Group--24/30 32 Volt
2L***75Terminal; (14-Ga To 16-Ga, No. 8 Screw)(Relay Switch "B" & "S")4
2V***13Tag-Notice; (Starting Aid)(Ether)1
3T***06Switch-Starting Aid; (Starting Aid)1
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8n619 Ether Starting Aid Group--12 Volt
2L***75Terminal; (14-Ga To 16-Ga, No. 8 Screw)(Relay Switch "B" & "S")4
2V***13Tag-Notice; (Starting Aid)(Ether)1
3T***06Switch-Starting Aid; (Starting Aid)1
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6t640 Electric Starting Motor Group--24 Volt--Prestolite--Part 1 Of 2
6T***40Starting Motor Group-Electric; Electric Starting Motor Group (Prestolite)1
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4n959 Electric Starting Motor Group--24 Volt--Part 2 Of 2
3t8949 Electric Starting Motor Group--24 Volt--Delco-Remy--Part 1 Of 3
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
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6n3229 Electric Starting Motor Group--32 Volt--L.H. Mounted
3t8949 Electric Starting Motor Group--24 Volt--Delco-Remy--Part 3 Of 3
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
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3n4581 Electric Starting Motor Group--24 Volt
3N***81Starting Motor Group-Electric; Electric Starting Motor Group1
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3t2780 Starting Motor Gp-Electric-24 Volt-Part 3 Of 3*R
4n959 Electric Starting Motor Group--24 Volt--Part 1 Of 2
3t8948 Starting Motor Gp-Electric-Part 2 Of 3
4n1061 Electric Starting Motor Group--24 Volt--Type 3
3t2779 Starting Motor Gp-Electrical-32 Volt-Part 3 Of 3
4n1061 Electric Starting Motor Group--24 Volt--Type 1
6n9677 Electric Starting Motor Group--24 Volt--Part 1 Of 3
6n3229 Starting Motor Gp-Electric-32 Volt L.H. Mounted
6n3229 Electric Starting Motor Group--32 Volt--L.H. Mounted--Type 2
6t640 Electric Starting Motor Group--24 Volt--Prestolite--Part 2 Of 2
6T***40Starting Motor Group-Electric; Electric Starting Motor Group (Prestolite)1
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6n9677 Electric Starting Motor Group--24 Volt--Part 2 Of 3
3t8967 Starting Motor Gp-Electric-24 Volt*R
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
3T***67Starting Motor Group-Electric; -24 Volt1
6T***40Starting Motor Group-Electric; Electric Starting Motor Group (Prestolite)1
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3t2779 Electric Starting Motor Group--32 Volt--Part 2 Of 3
4n1061 Electric Starting Motor Group--24 Volt--Type 4
3t2780 Starting Motor Gp-Electric-24 Volt-Part 1 Of 3*R
3t8948 Starting Motor Gp-Electric-Part 1 Of 3
3t2779 Electric Starting Motor Group--32 Volt--Part 1 Of 3
3t8948 Starting Motor Gp-Electric-Part 3 Of 3
6n9677 Electric Starting Motor Group--24 Volt--Part 3 Of 3
3t2780 Starting Motor Gp-Electric-24 Volt-Part 2 Of 3*R
4n1061 Electric Starting Motor Group--24 Volt--Type 2
3t8949 Electric Starting Motor Group--24 Volt--Delco-Remy--Part 2 Of 3
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
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6n5123 Solenoid Switch Assembly--24 Volt
5l8595 Solenoid Switch Assembly--32 Volt--Type 1
4m1812 Solenoid Switch Assembly--24 Volt
5l8595 Solenoid Switch Assembly--32 Volt--Type 2
7c9365 Contactor As
7C***65Switch As-Temperature; (Water Temperature)1
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7w8051 Switch Gp
2w8957 Switch Gp-32 Volt Dc Relay
2W***57Switch Group; -Air Inlet Shutoff1
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7n2417 Switch Group
2w8955 Switch Gp-12 Volt Dc Relay
2w6831 Switch Gp-Oil Pressure Alarm
2W***31Switch Group; -Oil Pressure Alarm1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
6T***52Switch As-Pressure; (Engine Oil)1
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2w8956 Switch Gp-24 Volt Dc Relay
2W***56Switch Group; -Electric Shutoff-Air Inlet Shutoff1
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2w8910 Switch Gp-Oil Step Protection
2W***10Switch Group; -Oil Step Protection1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
6T***51Switch As-Pressure; (Engine Oil)1
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7n4160 Switch Gp
5n8261 Switch Gp-Magnetic
5N***61Switch Group; -Air Inlet Shutoff1
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8n0530 Switch Gp-Heat Start
8n6132 Heat Start Switch Gp
8n0531 Switch Gp-Heat Start
8n5882 Heat Start Switch Gp
1w3669 Heat Start Switch Gp
6n3800 Heat Start Switch Gp
8n5881 Heat Start Switch Gp
2w8911 Switch Gp-Starting Aid
2W***11Switch Group-Starting Aid; -Secondary Stop1
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5n3014 Oil Pressure Time Delay Switch
5N***14Switch-Oil Pressure; Time Delay Oil Pressure Switch1
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7n1269 Terminal Assembly
1l5011 Regulating And Pressure Reducing Valve Group
8l4849 Wiring Gp-Automatic Start-Stop
05***71Grommet-Junction Box1
1H***18Grommet--Junction Box1
1H***66Clip-Wire Provides Loose Parts6
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7w3141 Wiring Gp
7C***68Harness As-Wiring1
7C***69Fastener Group1
7W***41Wiring Group1
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4l1192 Wiring Gp-Safety Shut-Off
05***71Grommet-Junction Box1
1H***66Clip-Wire Provides Loose Parts4
2L***65Terminal; (10-Ga To 12-Ga)(Relay Switch "C" & "B")6
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3l6655 Wiring Kit
1H***66Clip-Wire Provides Loose Parts2
1L***99Marker-(Wire Code)1
2L***52Terminal; (6-Ga, 3/8-In)(6 Gauge/9.53mm(.375in)Screw)1
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2l9808 Wiring Group
1L***99Marker-(Wire Code)1
2L***57Terminal-Ring; (8-Ga, No. 10 Screw)10
2L***58Terminal (To Alternator Positionor A Terminal)2
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6l4407 Wiring Kit Group
2L***49Terminal-Ring 6 Ga. (No. 10 Screw)1
2L***51Terminal-Ring; (6-Ga, 5/16-In Screw)1
2L***52Terminal; (6-Ga, 3/8-In)(6 Gauge/9.53mm(.375in)Screw)1
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1n8509 Wiring Kit Group
1L***99Marker-(Wire Code)1
1N***09Wiring Group-System; -Alternator1
2L***49Terminal-Ring 6 Ga. (No. 10 Screw)2
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3408 serial number reference

The ID/serial plate on a 3408 is mounted on the engine block; exact position (valve cover area, front gear housing, near flywheel housing) varies by application - marine, industrial, genset, and truck builds differ. The serial is also stamped directly into the block as a backup. Pre-2001 Cat engine serials run 8 characters: a 3-letter model/application prefix (what this list decodes) followed by a 5-digit sequence number, for example 99U01723. The prefix identifies model and build application only, not plant or exact build date. Some prefixes carry across the base 3408 and its 3408B successor, with the generation split falling at a sequence-number breakpoint inside the same prefix rather than at a prefix change - verify exact cutoffs with a dealer before ordering generation-specific parts.

PrefixIdentifies
99U3408 marine propulsion engine
67U3408 industrial/machine-mounted engine
78Z3408 generator set engine
28V3408 truck (vehicular) engine
48W3408 machine-mounted engine
1EM3408 machine-mounted engine
77M3408 machine-mounted engine
BFF3408 remanufactured engine
DLA3408 remanufactured engine

Frequently asked questions

What engine powers the Caterpillar 3408 marine package?

The 3408 designation is the engine itself: a 65-degree V-8, 18.0 L (1099 cu in) Caterpillar diesel with wet cylinder liners, a mechanical sleeve-metering injection pump feeding individual injector nozzles, and a mechanical or hydromechanical governor with no electronic control module. It shipped naturally aspirated, turbocharged, or turbocharged-aftercooled (TA/DITA), so exact rating varies by nameplate. Later 3408B, 3408C, and 3408E generations use different fuel systems and are not interchangeable with this base engine.

What does a Caterpillar 3408 marine engine weigh?

As a bare propulsion engine, dry weight runs roughly 1678-2087 kg (3700-4600 lb), varying with aspiration, cooling package, and accessory fit. There is no separate chassis or undercarriage weight to add since this is a stand-alone engine package rather than a complete vehicle; check the rating plate or installation drawing for an exact figure on a given unit.

What replaced the Caterpillar 3408 marine engine?

Within the same family, the base 3408 was followed by the 3408B, then the 3408C, and eventually the HEUI-electronic 3408E - each a distinct generation with its own fuel system and ratings, not a drop-in parts match for this base mechanical engine. As Caterpillar's mechanical 3400 series aged out of production, the marine propulsion lineup moved on to the C-series, including the C18, C27, and C32, which now cover the power range the 3408 family once held.

What 3408 owners discuss

How many hours can you realistically expect from a base 3408 marine diesel before a major overhaul?
Figures reported by operators vary a lot by duty cycle and rating. Continuous-duty commercial propulsion accounts commonly plan on a major overhaul somewhere in the 12,000-20,000 hour range, with a mid-life freshen (rings, big-end bearings, turbo) sometimes done earlier around 5,000-8,000 hours on harder-worked units. Lighter-duty recreational boats that rarely see full load report much longer calendar life, and a handful of commercial fishing accounts claim a single top-end well past 40,000 hours - treat that as an outlier tied to unusually gentle load factors and excellent cooling/fuel discipline, not a planning number. Because the base 3408 is mechanically governed with no electronic load management, actual life leans heavily on how close the boat runs to full rated load and how well the cooling and fuel systems were kept up. Confirm remaining life expectations against logged oil analysis and a compression/blow-by check rather than hours alone.
What is the most commonly reported cooling-system failure specific to marine use, and how do owners prevent it?
Cylinder liner cavitation from vibration at low RPM and light load is the failure mode owners and mechanics flag most for marine service, distinct from the wear patterns seen on the same block in truck or generator duty. It pits the outside of the wet liner and can eventually perforate it. Prevention centers on the coolant program: run a 50/50 ethylene glycol/demineralized water mix, dose it with the correct Supplemental Coolant Additive (SCA) concentration through the coolant filter/conditioner element, and test coolant chemistry on a regular interval rather than waiting for a problem to show. Cat Extended Life Coolant (ELC), which does not need SCA top-off, is accepted as an alternative program. Skipping SCA maintenance is the single most cited cause of premature liner failure on this family. Have a qualified diesel mechanic pressure-test the cooling system and pull a liner sample coolant test if cavitation is suspected.
The base 3408 uses a mechanical sleeve-metering injection pump - what quirks come with that versus the later electronic 3408E?
The base 3408 (and 3408B/3408C) run a Caterpillar sleeve-metering, mechanically-governed unit injection pump - one pump element and nozzle per cylinder, all-speed mechanical or hydromechanical governor, no ECM. This is a different fuel system than the HEUI electronic-injection 3408E, so troubleshooting approaches for the two do not carry over. The practical quirk owners note is timing drift: as the pump housing heats up during a run, it expands and effective injection timing advances slightly, so cold-start and hot-running timing can differ by a few degrees. Timing is set with a dial indicator against the pump housing at a specified BTDC mark, and pump-drive gear wear will push timing progressively later than spec over time - worth checking if the engine that used to start easily starts harder cold. Because there is no ECM to throw a fault code, injection timing problems on this engine show up as smoke, rough idle, or hard starting rather than a warning light.
What electrical or sensor issues come up most on a mechanically-governed engine like this?
Because the base 3408 has no engine control module, the electrical side is limited to charging, instrumentation, and starting circuits rather than engine-management sensors. The most repeated instrumentation complaint is a tachometer reading erratically or not at all, which is very often traced to a failing diode in the alternator rather than the tach sender itself - a bad diode lets AC ripple leak into the DC charging circuit and that ripple confuses pulse-type tach pickups. A multimeter check across the alternator output (DC volts should read normal charging voltage, AC volts should read close to zero) will confirm a diode problem before you replace a sender unnecessarily. Oil pressure and coolant temperature senders are simple mechanical/electrical switches or variable resistors on this generation and are a common wear item to check first for a gauge that reads zero or pegged. Have an auto-electrician verify alternator output and grounds before condemning any instrument.
What wear pattern is specific to how this engine is used in marine propulsion versus stationary or on-highway duty?
Raw-water-side cooling components take the brunt of marine-specific wear that a genset or truck installation never sees. Owners report checking the raw water pump impeller on a routine schedule (commonly cited around every 250 hours) since a worn or torn impeller is a leading cause of overheating, and replacement is straightforward with the right puller but can damage the pump housing if forced. Salt water accelerates corrosion in the heat exchanger and aftercooler cores, so sacrificial zinc anodes at the raw water pump and heat exchanger need regular inspection and replacement before they fully dissolve - once a zinc is gone, corrosion moves to the actual metal components. Aftercoolers in salt water service are generally serviced on a multi-year cycle (cleaning/pressure test roughly every two years, core replacement roughly every six years in salt water is a commonly cited guideline) and corrosion between dissimilar metals at the tube-bundle ends is the main reason these are hard to service. Annual freshwater flushing of the raw water circuit is a widely repeated way to slow scale and corrosion buildup between service intervals.
Carbon buildup and smoke complaints show up in generator and continuous-duty service - what's the practical driver?
Constant-load, constant-speed running (typical of generator sets and continuous propulsion duty) accelerates carbon buildup around the precombustion area and injector tips compared to engines that see varied load. Owners in genset service report tightening the precup/injector inspection interval, sometimes to roughly every 2,000 hours, versus a longer interval for engines that see varied load and occasional full-throttle runs that help burn off deposits. Excessive black smoke on this family is most often linked to worn injector spray-tip orifices increasing fuel delivery past spec, not a turbo problem by itself - a simple field check is to see if the smoke clears when the turbo is temporarily bypassed; if it doesn't, look at injectors before condemning the turbo. Oil in the aftercooler core is a telltale sign of a failing turbo shaft seal, worth checking whenever smoke is diagnosed. Have injector output tested and turbo shaft play checked by a qualified technician before replacing either part on a guess.
What should you check when evaluating a used base 3408 marine engine before buying?
Get an independent marine surveyor or diesel mechanic to inspect the engine in person rather than relying on a seller's hour meter and story alone - hour meters can be reset or the engine swapped, and paperwork history (service logs, oil analysis reports) is the best corroborating evidence of real use. Pull an oil sample for analysis and check for metal content, coolant intrusion, or fuel dilution, since those flag internal wear or leaks before they show up as a symptom. Check the aftercooler and heat exchanger for corrosion and confirm zinc anodes have been maintained, since salt-water-side neglect is the most common hidden cost on a used marine 3408. Verify which duty rating (A through D) the engine is set up for versus how the boat is actually run - an engine tuned for a lighter intermittent rating but run continuously at that output will wear faster than its rating suggests. Confirm parts availability and serial prefix (stamped near the fuel pump housing on the block) match a genuine base-3408 build rather than a later B/C/E variant misrepresented as the same engine, since fuel systems and parts are not interchangeable across those generations. Always have a qualified marine diesel mechanic perform a compression/blow-by check and sea trial under load before final purchase.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

Serial-range & configuration variants

This page covers the Caterpillar 3408. Related factory variants of the same model family:

34083408340834083408

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