Caterpillarengine - marinemarine engine

Caterpillar 3408B

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 3408B is a heavy-duty 65-degree V8 marine diesel engine, not a complete machine: a mechanically governed, mechanical-unit-injection engine sold as a propulsion power plant and, on larger vessels, as an engine-room auxiliary or emergency generator-set engine. It shares the 3408 family's 18.0-liter (1,099 cu in) displacement, 137.2 mm bore, and 152.4 mm stroke at a 14.5:1 compression ratio, and carries a dry net weight of roughly 1,640 to 1,680 kg (3,620 to 3,700 lb) for the base long block, before marine gear, cooling plumbing, and sound shielding are added. Caterpillar built the marine 3408B in turbocharged (TA) and turbocharged-aftercooled (DITA) arrangements, with documented propulsion ratings spanning roughly 330 to 485 hp (246 to 362 kW) at 1800 rpm depending on configuration and rating. It sits in the middle of the 3408 lineage, following the original naturally aspirated base 3408 and preceding the later dual-turbo 3408C and the fully electronic 3408E.

The step up from the base 3408 to the 3408B centered on adding a turbocharged-aftercooled rating option while keeping the same cast-iron block, wet-sleeve cylinder liners, and hydromechanical governor, so parts and rebuild practices carry over closely across the whole family. Later 3408C engines pushed turbocharging further and the 3408E added full electronic unit injection and governing, a split that matters in the field: the 3408B has no ECM and no diagnostic-code system, so a mechanic times and rebuilds it with hand tools and mechanical checks rather than a scan tool. Caterpillar eventually phased out the entire 3408 platform in favor of its electronically controlled C-series marine diesels as emissions rules tightened. In today's used and parts market, the 3408B stays in demand precisely for that mechanical simplicity: fleet-reported base-engine life commonly runs 8,000 to 16,000 or more hours before a first major overhaul, many units are still running after decades of service, and a deep aftermarket exists for overhaul kits, injection components, pumps, and marine cooling parts.

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 3408B specifications

Engine

Model / seriesV-8, four-stroke-cycle diesel, Caterpillar 3400 series. Marine propulsion versions built in TA (turbocharged) and DITA (turbocharged, aftercooled) arrangements. The 3408B sits between the original 3408 and the later 3408C in the same 18-liter block family.
Power ratingDITA marine propulsion: 443 hp (330 kW) at 1800 rpm on the B (heavy-duty) rating. Higher-output DITA builds are documented up to 485 hp (362 kW) at 1800 rpm. TA (non-aftercooled) marine rating: approximately 350 hp (261 kW).
Displacement18.0 L (1,099 cu in)
Cylinders / bore & strokeV-8, bore 137.2 mm x stroke 152.4 mm (5.4 in x 6.0 in)
Compression ratio14.5:1
AspirationTurbocharged; jacket-water aftercooled on the DITA rating, no aftercooling on the TA rating
Emissions tierFully mechanical fuel system, no electronic engine controls or aftertreatment. Predates EPA/IMO marine emissions tier certification.
Fuel system / governorMechanical direct injection with a hydromechanical governor

Weights

Dry weight (base engine)Approximately 1,640-1,680 kg (3,620-3,700 lb) net dry for the base long block
Installed / packaged weightComplete marine propulsion packages (marine gear, heat exchanger or keel-cooling plumbing, sound shield) commonly run 1,720-1,990 kg (3,800-4,390 lb). Figure varies by dealer package and accessories fitted -- verify against the specific unit's build sheet.
Ground pressureNot applicable. Stationary propulsion engine, no ground-contact undercarriage.

Dimensions

Length (bare long block)Approximately 1.58 m (62.3 in)
Width (bare long block)Approximately 1.11 m (43.6 in)
Height (bare long block)Approximately 1.36 m (53.7 in)
Installed footprintGrows with marine gear, cooling plumbing, and sound shielding. Complete-unit dimensions reported for resale packages range roughly 1.75-2.13 m (69-84 in) long, up to about 1.4 m (55 in) wide, and up to about 1.83 m (72 in) high depending on configuration -- treat as configuration-specific, not a fixed factory figure.

Performance

Rated power by configurationB-rating DITA: 443 hp (330 kW) at 1800 rpm. Some higher-output DITA builds documented at 485 hp (362 kW) at 1800 rpm. TA (non-aftercooled): approximately 350 hp (261 kW).
RotationCounterclockwise, viewed from the flywheel end
Flywheel housingSAE No. 1
Fuel consumptionNot consistently documented for this exact rating -- verify actual burn rate at your operating load with your dealer or the engine data plate.
Gradeability / drawbar / dig-lift figuresNot applicable. Stationary marine propulsion engine, no travel or work-tool performance figures.

Service capacities (summary)

Fuel tankNot applicable. Engine draws from a vessel-supplied fuel tank; no engine-mounted tank.
Cooling systemApproximately 75 L (19.8 gal) refill for the base engine circuit. Keel-cooled or heat-exchanger marine installations add hose and header-tank volume beyond this base figure.
Engine oil (lube system)Approximately 46 L (12.2 gal) refill including filter change, for the base engine
Hydraulic systemNot applicable. No onboard hydraulic system on the base engine.

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

3408B fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)Approx. 38-61 L (10-16 US gal), varies by oil pan and rating. One rated marine configuration reports 54 L (57 qt / 14.3 US gal). Confirm against the capacity plate or OMM for your specific arrangement and serial prefix.Cat DEO (Diesel Engine Oil) meeting API CD/CE (CF-4/CG-4 accepted as later equivalents). SAE 15W-40 for normal to warm ambient; SAE 10W-30 for cold-weather starting below 0°C (32°F).
Cooling system (jacket water)Reported figures vary widely, roughly 75-114 L (19.8-30 US gal), depending on whether the engine runs heat-exchanger cooling (marine, smaller jacket-water circuit) or radiator cooling (industrial/genset arrangement). Not consistently documented for the marine arrangements - confirm against the capacity plate or OMM for the exact serial range.Cat DEAC (Diesel Engine Antifreeze/Coolant), full-strength or 50/50 with clean soft water; maintain supplemental coolant additive (SCA) concentration with a coolant conditioner/filter element. Cat ELC (Extended Life Coolant, no SCA) accepted as a later alternative per current service literature.
Fuel systemFuel tank capacity not specified in the engine OMM - the tank is vessel-installed and sized by the boat builder/integrator, not the engine manual.No. 2-D diesel fuel meeting ASTM D975 or the equivalent local diesel fuel spec. Use a winter-grade blend in cold climates to keep the fuel pour point below ambient.
Marine reduction gear / marine transmission (where factory-fitted)Not documented in the base engine OMM. Capacity is set by the gear manufacturer's nameplate on the reduction/reverse gear paired with this engine; refer to that unit's own service literature.Cat TDTO (Transmission/Drivetrain Oil) or the gear manufacturer's specified marine gear oil, per the gearbox nameplate - this is not a fluid the engine OMM itself specifies.
Grease (multipurpose, chassis/linkage points)Spec only - no chart capacity. Apply per grease-point service interval.Cat Multipurpose Grease (Cat MPGM), NLGI 2, lithium-complex base. Use an NLGI 1 or 0 low-temperature grease in sustained sub-freezing ambient where the fitting calls for it.

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

Caterpillar 3408B maintenance schedule

Service intervalTasks
Every 50 h
  • Check crankcase oil level on the dipstick before starting and top off with the specified grade.
  • Check coolant level in the expansion tank or heat exchanger and inspect for leaks or seepage.
  • Drain accumulated water and sediment from the primary fuel/water separator.
  • Inspect the raw-water strainer basket and clear debris restricting seawater flow.
  • Walk around the engine room checking for fuel, oil, coolant, and exhaust leaks and unusual belt or bearing noise.
Every 250 h
  • Change engine oil and the oil filter element; pull a sample for analysis and check for a milky or gray tint indicating coolant intrusion.
  • Inspect the raw-water pump's bronze impeller for cracked, missing, or corroded vanes and replace if worn.
  • Inspect sacrificial zinc anodes in the heat exchanger and oil cooler and replace any more than half consumed.
  • Check alternator and accessory drive-belt tension and condition.
  • Confirm oil-pressure, jacket-water-temperature, and sea-water-pump-pressure alarm switches trip at the correct setpoints.
Every 500 h
  • Replace the secondary fuel filter element and check for water or contamination.
  • Inspect the air intake screen or filter and clean or replace if fouled.
  • Inspect turbocharger boost lines, clamps, and mounting hardware on TA and DITA units.
  • Check the aftercooler core's raw-water side for scale buildup and acid-flush if intake airflow is restricted.
Every 1,000 h
  • Drain and renew coolant and test corrosion-inhibitor concentration, topping off as needed.
  • Open and inspect the heat-exchanger core and end covers for scale and salt buildup.
  • Check hydromechanical governor linkage travel and fuel-rack movement for free operation.
  • Inspect the crankcase breather and turbocharger oil-drain lines for restriction.
Every 2,000 h
  • Adjust intake and exhaust valve lash to the mechanical specification.
  • Pull, pop-test, and recondition or replace fuel injectors showing erosion or a poor spray pattern; check for accelerated wear from low-lubricity fuel.
  • Check turbocharger shaft end play and inspect for oil leakage past the seals.
  • Verify injection-pump timing and reset if drift is found.
  • Inspect the vibration damper and flywheel housing for looseness or cracking.
Every 4,500 h
  • Remove cylinder heads for inspection, checking for cracks, valve-seat recession, and warpage.
  • Test compression on each cylinder and flag any reading more than 15 to 20 percent below standard.
  • Inspect wet-sleeve liners and piston rings for excessive blow-by or ring-land wear.
  • Recondition or replace injectors and fuel-transfer pump components as a set.
Every 8,000 h
  • Treat this as the low end of the reported window for a first major overhaul; inspect main and rod bearing clearances and replace shells showing scoring or excessive clearance.
  • Check crankshaft journals for out-of-round wear and regrind or polish as required.
  • Overhaul the raw-water and jacket-water pump assemblies.
  • Replace or acid-flush the aftercooler core if scale has restricted flow.
Every 16,000 h
  • Treat this as the upper end of the reported window before a first major overhaul is typically needed; perform a complete teardown and inspect the block, crankshaft, and camshaft against factory wear limits.
  • Recondition or replace all wet-sleeve liners, pistons, rings, and main/rod bearings.
  • Replace all gaskets, seals, and wear components in the cooling and lube systems.
  • Pressure-test the reassembled long block and verify compression and injection timing before return to service.

Servicing the 3408B beyond the schedule

Predictive Maintenance & Fluid Analysis

The 3408B has no ECM or diagnostic codes. Its only electronic-style warnings are alarm and shutdown switches for oil pressure, jacket-water temperature, and sea-water pump pressure, so oil analysis and mechanical checks carry the load. Sample crankcase oil at every change and watch for a milky or gray tint, which signals coolant intrusion rather than normal wear. Track raw-water pump discharge pressure and aftercooler differential, since scale buildup inside the core is one of the most commonly reported wear points on working units.

Corrective & Common Repairs

Owners and mechanics most often flag the raw-water side: gear-driven, bronze-impeller pumps corrode and lose flow at low RPM, and a neglected impeller is blamed for downstream exhaust-elbow and hose damage. Aftercooler cores scale from raw water and choke intake airflow, so periodic pulling and acid-flushing is treated as routine rather than optional. Modern low-sulfur, low-lubricity diesel accelerates injector-tip erosion and pump wear on this platform; run a lubricity additive and keep fuel filtration tight. Persistent black smoke traces to worn injectors or restricted air; check boost first.

Overhaul & Rebuild Points

Reported life to first major overhaul spans roughly 8,000 to 16,000 hours, depending on load factor and maintenance history. Compression loss of more than 15 to 20 percent from standard, or a milky or gray oil sample, points to coolant intrusion and signals the top end needs attention. Because the fuel system is fully mechanical, a rough runner is diagnosed with compression tests, injector pop-testing, and boost checks rather than a scan tool. A well-rebuilt long block is commonly good for another 10,000 or more hours.

Seasonal & Environment Servicing

Warm, silty, or brackish operating water accelerates the two environment-driven failure points on this platform: raw-water pump impeller corrosion and aftercooler core scaling, so shorten inspection intervals in those conditions rather than relying on the standard 250 hour benchmark. Zinc anodes need checking before and after layup since galvanic corrosion is faster in warm and brackish ports. Before winter storage, flush the raw-water circuit and heat exchanger and drain raw-water pumps and end covers completely to prevent freeze damage in exposed jacket-water and aftercooler plumbing.

3408B common service parts

Part numberPart
2N-3341Filter High PressureCheck fitment →

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3408B fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
LOW OIL PRESSURE - ALARMEngine lube oil pressure switch opens below roughly 60 kPa (9 psi) and lights the alarm indicator on the panel.Low oil level, worn oil pump, restricted suction screen, or a faulty pressure switch/sender.Check crankcase oil level and condition first. Verify switch wiring and ground before condemning the pump.
LOW OIL PRESSURE - SHUTDOWNA second-stage pressure switch de-energizes the fuel shutoff solenoid and stops the engine when oil pressure falls further, below the alarm setpoint.Same root causes as the alarm stage carried further - oil starvation, pump wear, or a stuck shutdown switch.Do not restart until oil level, filter condition, and pump output are confirmed. Pressure-test the switch before returning to service.
HIGH JACKET WATER TEMPERATURE - ALARMCoolant temperature switch closes above the normal jacket water operating range and lights the high-temperature alarm.Low raw water flow, fouled heat exchanger or aftercooler, slipping or failed water pump drive, closed seacock.Check raw water intake, strainer, and impeller first. Inspect heat exchanger tubes for scale or debris.
HIGH JACKET WATER TEMPERATURE - SHUTDOWNA second-stage coolant temperature switch shuts the engine down when jacket water temperature keeps climbing past the alarm point.Uncorrected overheat condition - loss of raw water flow, closed valve, or a thermostat stuck closed.Let the engine cool, then inspect the raw water circuit and heat exchanger. Do not restart until the root overheat cause is found.
ENGINE OVERSPEED - SHUTDOWNThe overspeed protection device trips near 127 percent of rated speed, opening a relay that de-energizes the fuel shutoff solenoid and stops fuel to the engine.Governor linkage failure, broken or disconnected fuel rack, sudden loss of load on a genset or PTO drive.Inspect governor linkage and fuel rack for binding or breakage before restart. Reset the overspeed device per the factory procedure.
LOW SEA WATER PUMP PRESSURE - ALARMRaw (sea) water pump discharge pressure switch trips below its setpoint once engine speed is above roughly 650 rpm.Clogged sea strainer, worn or failed impeller, suction-side air leak, or a closed seacock.Check the strainer and seacock first, then inspect the raw water pump impeller and drive.
LOW JACKET WATER PUMP PRESSURE - ALARMJacket (fresh) water circulating pump discharge pressure switch trips below its setpoint above roughly 650 rpm.Worn or failed jacket water pump, drive belt slip or failure, low coolant level causing pump cavitation.Check coolant level and belt tension, then inspect the jacket water pump for wear or seal failure.
LOW AFTERCOOLER PUMP PRESSURE - ALARMOn aftercooled configurations, the separate-circuit aftercooler water pump discharge pressure switch trips below its setpoint above roughly 650 rpm.Aftercooler pump wear or failure, a fouled aftercooler core restricting flow, or a drive failure.Confirm the engine is an aftercooled configuration, then check aftercooler pump output and core condition.

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

3408B attachments & work tools

Marine reduction/reverse gear

Pairs with SAE-compatible marine transmissions (e.g. Twin Disc MG514C, MG516 class) offering reduction ratios from roughly 2.0:1 up to about 3.5:1. Exact ratio is picked per vessel, propeller, and hull type, so it varies by installation rather than one fixed factory gear.

Flywheel housing / coupling standard

Uses an SAE No. 1 flywheel housing, the common marine-industry mounting standard. This lets the engine couple to most SAE-compatible marine gears, clutches, and PTO-driven accessory equipment without a custom adapter.

Cooling system arrangement

Standard setup is heat-exchanger cooling: a raw-water (seawater) pump feeds a shell-and-tube heat exchanger that cools the closed fresh-water circuit. Keel-cooled (skin-cooled) arrangements are also used on 3400-series marine installs where high inlet water temperature or reduced raw-water plumbing is wanted; choice varies by boat and duty cycle.

Exhaust system

Typical pleasure/light-commercial installs use a water-cooled wet exhaust (mixing) elbow downstream of the manifold to cool exhaust gas and cut noise before flexible hose carries it overboard. Heavier commercial vessels can instead run a water-jacketed dry exhaust manifold and riser. Configuration is installation-specific, not a single fixed factory setup.

PTO and accessory drive groups

A front power-take-off adapter is offered off the crank pulley/damper for belt- or shaft-driven accessories such as a hydraulic pump or washdown pump. Separate engine-mounted auxiliary drive groups support an air compressor or hydraulic pump. Mounting positions are arrangement-dependent: some auxiliary drive groups on the left-hand front of the engine cannot be combined with an auxiliary raw-water pump group, so accessory selection ties to the cooling arrangement chosen.

Governor and control station

Engine runs a fully mechanical unit-injector fuel system with a mechanical governor (period parts references a 2301-type governor group). Marine control kits support single-lever or dual-lever operation and can be wired for a single station or dual station (e.g. lower helm plus flybridge/pilothouse) remote control.

Engine mounts and vibration isolation

Propulsion installs use resilient rubber/elastomeric engine mounts to isolate vibration and noise from the hull rather than a rigid bed. Mounts are sized to engine weight and running speed and are chosen per installation, not a single universal part.

Turbocharging arrangement and rating spread

3408B marine versions are built in turbocharged (TA) and turbocharged-aftercooled (DITA) arrangements. Ratings span roughly 330-465 hp (246-347 kW) across sources depending on aspiration and aftercooling, with turbo-only variants at the lower end and turbo-aftercooled variants at the higher end; treat any single horsepower figure as configuration-dependent.

Auxiliary/genset configuration

Beyond direct propulsion, the same 3408B block was also factory-configured as an engine-room auxiliary or emergency generator-set engine aboard larger vessels, using a generator-drive and governor arrangement distinct from the propulsion setup. This is a documented factory configuration option rather than a work-tool attachment.

All 3408B assemblies by section

Every catalogued assembly group for the Caterpillar 3408B. 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
7n9683 Cylinder Block Group
4n801 Cylinder Block Group
6n2151 Cylinder Block Group
1w9799 Cylinder Head Assembly
1w9800 Cylinder Head Assembly--Field Installation
1w9802 Cylinder Head Group
4n1817 Cylinder Head Gp*R
7n857 Cylinder Head Group
4n1816 Cylinder Head Gp*R
4N***16Cylinder Head Group; Cylinder Head Group -Or-1
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4n1710 Cylinder Head Group
6n9979 Cylinder Head Group
6n3187 Pulley And Damper Gp
4n2583 Pulley And Damper Group
2w2017 Pulley And Damper Group
7n3080 Flywheel Group
6n7510 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
8n11 Lifting Group
7n1748 Lifting Group
7N***48Lifting Group; Lifting Gp-Engine1
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4n1733 Oil Pan Group
7n3517 Rod & Piston Gp--8 Required
7N***17Piston & Rod Group; Connecting Rod And Piston Group1
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4n1994 Rod And Piston Group--8 Required
4N***94Piston & 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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4n1993 Rod And Piston Group--8 Required
4N***93Piston & Rod Group; Connecting Rod And 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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2w9054 Rod & Piston Gp--8 Required
2W***54Piston & Rod Group; Connecting Rod & 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 2
2w248 Coolant Conditioner Group--Type 1
2w247 Coolant Conditioner Group--Type 1
2w248 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
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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3n8888 Heat Exchanger Group--Sea Water--762 Mm (30")
3n8890 Heat Exchanger Assembly
3n8889 Heat Exchanger Group--Sea Water
3N***89Heat 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 Group--Aftercooler
4N***74Lines Group-Water; Water Aftercooler Lines Group1
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4n3707 Water Lines Group
4n7174 Water Lines Gp--Aftercooler
4N***74Lines Group-Water; Water Aftercooler Lines Group1
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4n3707 Lines Gp-Water
5n2857 Oil Single Pass Cooler Assembly
5N***57Oil Single Pass Cooler Assembly1
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5n7491 Pump Gp-Auxiliary-Sea Water
3n7713 Pump Gp--Auxiliary--Sea Water
3n8561 Pump Gp--Auxiliary--Sea Water
3N***61Pump Group-Auxiliary; Pump Group-Auxiliary Sea Water1
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3n7790 Pump Gp-Auxiliary-Sea Water
7c3613 Pump Gp-Auxiliary-Sea Water
7c3614 Pump Gp-Auxiliary-Sea Water
5n2600 Pump Gp-Auxiliary
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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7n7877 Expansion Tank Group--Part 1 Of 2
7N***77Tank Group-Expansion; Tank Group-Expansion-B1
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7n7877 Expansion Tank Group--Part 2 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 Group--Part 1 Of 2
4n1698 Expansion Tank Gp-Part 2 Of 2
8n9326 Expansion Tank Group--Part 1 Of 2
7n9529 Water Level Gauge Group
Engine Arrangement
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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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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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 2 Of 2
1W***37Turbocharger Group; Turbocharger Group-Watercooled1
2W***86Drive Group-Governor & Fuel Pump1
2W***01Engine Ar1
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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 1 Of 2
2N***20Breather Group; Breather Gp-Crankcase2
4N***01Cylinder Block Group1
4N***20Crankshaft Group1
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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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6n1152 Engine Arrangement--Part 1 Of 2
4N***01Cylinder Block Group1
4N***20Crankshaft Group1
4N***63Camshaft Group; Camshaft Group-Single1
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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
9n3362 Fuel Ratio Control Group
9N***62Control Group-Fuel Ratio; Fuel Ratio Control Group - Or -1
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2w3157 Fuel Ratio Control Group
7n5486 Fuel Ratio Control Gp*R
6n6209 Fuel Ratio Control Group
6n0651 Fuel Ratio Control Gp*R
6n818 Fuel Ratio Control Group
6n2846 Governor Control Group--Remote & Positive Lock--R.H.
3n8146 Governor Control Group--Type 2
3n8029 Governor Control Group--Type 1
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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6n2845 Governor Vernier And Positive Lock Control Group
6N***45Control Group-Governor; -Vernier And Positive Lock1
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3n8029 Governor Control Group--Type 2
6n2844 Positive Lock Control Group--R.H.
4n3828 Governor Control Group--Remote & Positive Locking
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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4n3829 Control Gp-Governor-Vernier & Positive Locking
3n8146 Governor Control Group--Type 1
4n3830 Control Gp-Governor-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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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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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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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 Gp--Field Installation--Part 1 Of 2
8n3104 Woodward Psg Governor Conversion Gp-Part 2 Of 2-Type 5
8n3104 Woodward Psg Governor Conversion Gp--Field Installation--Part 2 Of 2
8n3104 Woodward Psg Governor Conversion Group--Part 1 Of 2--Field Installation--Type 1
8n3104 Woodward Psg Governor Conversion Group--Part 2 Of 2--Field Installation--Type 1
8n3104 Woodward Psg Governor Conversion Gp--Part 1 Of 2--Type 5
8n6389 Governor Cover Group
2w1788 Drain Gp-Fuel-Alarm Switch & Lines
6n1656 Governor Gp-Drive
6n3195 Governor And Fuel Pump Drive Group
6N***95Drive Group-Governor & Fuel Pump; Governor & Fuel Injection Pump Drive Group1
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2w3986 Governor And Fuel Pump Drive Group
2W***86Drive Group-Governor & Fuel Pump1
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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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6n6290 Fuel Filter Group--Duplex--L.H.--Type 2
4n1981 Fuel Filter Group
6n6290 Fuel Filter Group--Duplex--L.H.--Type 1
8h7204 Fuel Filter Group--Type 1
8h7204 Fuel Filter Group--Type 2
6n6282 Fuel Filter Group--Duplex--R.H.
7n1233 Fuel Injection Pump Group--Part 1 Of 2--Type 3
7n1076 Fuel Injection Pump Group--End View--Type 2--Part 2 Of 2
7n1233 Fuel Injection Pump Group--Part 1 Of 2--Type 2
7n1076 Fuel Injection Pump Group--End View--Type 3--Part 2 Of 2
7n1233 Fuel Injection Pump Group--Part 2 Of 2--Type 1
7n1233 Fuel Injection Pump Group--Part 1 Of 2--Type 1
7n1233 Fuel Injection Pump Group--Part 2 Of 2--Type 3
7n1076 Fuel Injection Pump Group--Side View--Type 2-Part 1 Of 2
7n1233 Fuel Injection Pump Group--Part 2 Of 2--Type 2
4n2637 Fuel Injection Pump Group--End View--Part 2 Of 2
7n1076 Fuel Injection Pump Group--End View--Type 1-Part 2 Of 2
7n1076 Fuel Injection Pump Group--Side View--Type 1-Part 1 Of 2
4n2637 Fuel Injection Pump Group--Side View--Part 1 Of 2
7n1076 Fuel Injection Pump Group--Side View--Type 3--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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4n1894 Governor Group--Part 1 Of 3--Type 2
8n7526 Governor Gp-Up-Part 1 Of 2
8n7526 Governor Gp-Part 2 Of 2
8n7526 Governor Gp-Part 1 Of 2
6n5178 Governor Group--Part 1 Of 3--Type 1
4n1894 Governor Group--Part 2 Of 3--Type 1
7n7327 Governor Group--Part 2 Of 2--Replaced By 8n7526 Shown On
4n1894 Governor Group--Part 3 Of 3--Type 1
7n7327 Governor Group--Part 1 Of 2--Replaced By 8n7526 Shown On Pages 107c & 107d
6n5178 Governor Group--Part 3 Of 3--Type 1
1w1637 Governor Gp-Woodward
4w6811 Governor Gp-Woodward
8n6951 Governor Gp-Woodward
7n6271 Governor Gp-Part 1 Of 2
4n1894 Governor Group--Part 1 Of 3--Type 3
4n1894 Governor Group--Part 1 Of 3
4n1894 Governor Group--Part 3 Of 3--Type 2
8n6775 Woodward Governor Group
4n1894 Governor Group--Part 2 Of 3--Type 2
4n1894 Governor Group--Part 3 Of 3--Type 3
4n1894 Governor Group--Part 3 Of 3
4n1894 Governor Group--Part 1 Of 3--Type 1
6n5178 Governor Group--Part 2 Of 3--Type 1
1w1636 Woodward Governor Group
1w1637 Woodward Governor Gp
8n6951 Governor Gp-Woodward-Psg
6n5178 Governor Group--Part 2 Of 3--Type 2
4n1894 Governor Group--Part 2 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
6n5178 Governor Group--Part 1 Of 3--Type 2
6n5178 Governor Group--Part 3 Of 3--Type 2
8n6951 Woodward Governor Group--Psg--24 Volt Motor
6n9735 Woodward Governor Group
6N***35Governor Group-Woodward; Woodward Psg Governor Group1
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6n9732 Woodward Governor Group
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 3
6n7666 Fuel Filter Lines Group
6n8969 Fuel Filter Lines Gp-L.H.-Type 2
6n8130 Fuel Filter Lines Gp-Duplex-R.H.-Type 1
6n8969 Fuel Filter Lines Gp-L.H.-Type 3
6n8969 Fuel Filter Lines Gp-L.H.-Type 1
6n8969 Fuel Filter Lines Gp-L.H.-Type 4
6n8130 Fuel Filter Lines Gp-Duplex-R.H.-Type 2
8n2208 Lines Gp-Fuel Filter-Duplex L.H.
7w1071 Fuel Filter Lines Gp
4n2088 Fuel Injection Lines Group
9n3958 Lines Gp--Fuel Injection
9N***58Lines Group-Fuel Injection; Fuel Injection Lines Group1
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4n2087 Fuel Injection Lines Gp
4N***87Lines Group-Fuel Injection; Fuel Injection Lines Group - Or -1
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8n2461 Fuel Injection Lines Group
8N***61Lines 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 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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6n5314 Governor Servo Basic Piston Group
6n1947 Governor Servo Basic Piston Group--Type 2
6n1947 Governor Servo Basic Piston Group--Type 1
7n7328 Governor Adapter Plate Group--Type 1
7n7328 Plate Gp-Adapter-Governor-Type 2
8n7525 Plate Gp-Governor
9n3684 Governor Adapter Plate Group--Type 2
9n3684 Governor Adapter Plate Group--Type 3
9n3684 Governor Adapter Plate Group--Type 1
6n7829 Fuel Injection Pump Gp
9n3328 Fuel Injection Pump Group--Side View--Type 2--Part 1 Of 2
9n3326 Fuel Injection Pump Group--Part 1 Of 2--Type 2
9n3326 Fuel Injection Pump Group--Part 2 Of 2--Type 2
7n6389 Fuel Injection Pump Group--Part 1 Of 2
9n3328 Fuel Injection Pump Group--Side View--Part 1 Of 2--Type 1
6n1043 Fuel Injection Pump Gp
6N***43Pump Group-Fuel Injection; Pump Group-Fuel Injection1
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9n3328 Fuel Injection Pump Group--End View--Type 2--Part 2 Of 2
7n1185 Fuel Injection Pump Gp
9n3328 Fuel Injection Pump Group--End View--Part 2 Of 2--Type 1
7n6389 Fuel Injection Pump Group--Part 2 Of 2
4n3287 Fuel Priming Pump Group
4N***87Pump Group-Fuel Priming; Pump Group-Fuel Priming1
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4n1111 Fuel Transfer Pump Group--Type 1
4n1101 Fuel Transfer Pump Group
4w5477 Fuel Transfer Pump Group
4n1111 Fuel Transfer Pump Group--Type 2
7n7575 Governor, Fuel Injection And Fuel Transfer Pump Group--Type 2
7N***75Pump 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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7n8242 Governor, Fuel Injection And Fuel Transfer Pump Group
7N***42Pump 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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8n6664 Governor, Fuel Injection And Fuel Transfer Pump Group--Type 1
8N***64Pump 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
8n3111 Air Cleaner Gp
8N***11Air Cleaner Group; Air Cleaner Group1
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4n1617 Air Cleaner Group
8n3372 Air Cleaner Group--Type 2
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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8n3371 Air Cleaner Group--Type 1
8n5766 Air Cleaner Gp
8n3372 Air Cleaner Group--Type 1
1n3999 Turbocharger Cartridge Gp*R
1w1653 Turbocharger Cartridge Gp*R
9n3998 Turbocharger Cartridge Group
9n6675 Cartridge Gp-Turbocharger
6n4432 Exhaust Elbow Gp
7l447 Exhaust Elbow Group--90 Degree Bend--6"
3n7286 Exhaust Elbow Group--Watercooled 8" O.D.
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.)
4n7172 Air Lines Group
4n7131 Air Lines Group
4n7172 Lines Gp-Air
4n1886 Exhaust Manifold Group--Part 2 Of 2
4N***86Manifold Group-Exhaust; Watercooled Exhaust Manifold Group1
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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 1 Of 2
4N***86Manifold Group-Exhaust; Watercooled Exhaust Manifold Group1
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5l3338 Exhaust Pipe Group--8"
4l5801 Exhaust Pipe Group--6"
6n2948 Turbocharger Group--Watercooled--Type 2
6N***48Turbocharger Group; -Watercooled1
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6n6312 Turbocharger Group--Watercooled
6n6127 Turbocharger Group
8n7192 Turbocharger Group--Watercooled
8N***92Turbocharger Group; Turbocharger Group-Watercooled1
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1n3991 Turbocharger Group
6n2929 Turbocharger Group
6n6132 Turbocharger Group
8n6953 Turbocharger Gp
6n6131 Turbocharger Group
1w2237 Turbocharger Group--Watercooled
1W***37Turbocharger Group; Turbocharger Group-Watercooled1
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8n7192 Turbocharged Group--Watercooled
8N***92Turbocharger Group; Turbocharger Group-Watercooled1
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6n6311 Turbocharger Group--Watercooled
6N***11Turbocharger Group; Turbocharger Group-Watercooled1
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6n7792 Turbocharger Group--Type 1
1w1654 Turbocharger Gp*R
6n2948 Turbocharger Group--Watercooled--Type 3
6N***48Turbocharger Group; -Watercooled1
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6n7792 Turbocharger Group--Type 2
1w1304 Turbocharger Gp
6n2951 Turbocharger Group--Watercooled
6n2948 Turbocharger Group--Watercooled--Type 1
6N***48Turbocharger 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 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 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 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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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 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 2 Of 2 -- Type 1
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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6n386 Oil Filter Group--Duplex R.H.--Part 2 Of 2--Type 2
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
6n0386 Filter Gp--Oil--Part 1 Of 2
6n386 Oil Filter Group--Duplex R.H.--Part 2 Of 2--Type 3
6n386 Oil Filter Group--Duplex R.H.--Part 2 Of 2--Type 1
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
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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8n3920 Oil Level Gauge Group--L.H. Rear
8N***20Gauge Group-Oil Level (Dipstick); -Lh, Rear-Engine1
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5n3873 Lines Gp--Oil Drain
6n0641 Oil Lines Gp--Part 1 Of 2
6n641 Oil Lines Group--Part 1 Of 2
4w1545 Lines Gp--Engine Oil
6n0641 Oil Lines Gp--Part 2 Of 2
6n641 Oil Lines Group--Part 2 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
7n863 Oil Level Gauge Group--L.H. Rear
8n3919 Oil Level Gauge Group--L.H. Rear--Replaced By 8n3920 Shown On
6n6888 Oil Level Gauge Group--L.H. Rear
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 2
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 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 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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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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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 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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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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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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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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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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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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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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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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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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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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3n4628 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 3 Of 4
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
3n4552 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 1 Of 3
3n4628 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 1 Of 4
3n4627 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 2 Of 4
3n4626 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 1 Of 4
3n4552 Marine Gear Group--Mg514--6.00 : 1 Ratio--Part 2 Of 3
3n4628 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 2 Of 4
3n4626 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 4 Of 4
3n4627 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 4 Of 4
3n4626 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 2 Of 4
3n4627 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 3 Of 4
3n4550 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 1 Of 3
3n4549 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 1 Of 3
3n4626 Marine Gear Group--Mg514--2.00 : 1 Ratio--Part 3 Of 4
3n4550 Marine Gear Group--Mg514--4.50 : 1 Ratio--Part 2 Of 3
3n4549 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 2 Of 3
3n4549 Marine Gear Group--Mg514--3.50 : 1 Ratio--Part 3 Of 3
3n4627 Marine Gear Group--Mg514--2.50 : 1 Ratio--Part 1 Of 4
3n4628 Marine Gear Group--Mg514--3.00 : 1 Ratio--Part 4 Of 4
3n6063 Marine Gear Mounting Group--Type 1
3n6063 Marine Gear Mounting Group--Type 2
3n6064 Marine Gear Mounting Group
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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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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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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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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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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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 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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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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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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5n6738 Marine Gear Mounting Group--Deep Sump
3n5843 Marine Gear Mounting Group
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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3n5843 Marine Gear Mounting Gp-Type 3
3N***43Mounting Group-Marine Tmsn; Mounting Group1
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5n6737 Marine Gear Mounting Group--Shallow Sump
9g6268 Marine Transmission Gp-Part 4 Of 4-Mg514c-3.00 : 1 Ratio
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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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 4 Of 5--Type 1
3N***56Transmission Group-Marine; Marine Gear Group1
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9g6269 Marine Transmission Gp--Part 1 Of 4--Mg514c--3.50 : 1 Ratio
9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 1 Of 5--Type 2
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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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 2 Of 4--Type 2
5N***22Transmission 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 Transmission Gp--Part 4 Of 4--Mg514c--2.50 : 2 Ratio
9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 3 Of 4--Type 2
9g6266 Marine Gear Group--Mg514c--2.00 : 1 Ratio--Part 1 Of 4--Type 1
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 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 5 Of 5--Type 1
3N***57Transmission Group-Marine; Marine Gear Group1
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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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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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9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 2 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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9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 2 Of 5--Type 1
9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 1 Of 4--Type 3
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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9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 4 Of 4--Type 2
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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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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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
9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 1 Of 4--Type 3
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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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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9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 1 Of 4--Type 2
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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9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 1 Of 5--Type 1
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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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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9g6266 Marine Gear Group--Mg514c--2.00 : 1 Ratio--Part 3 Of 4--Type 1
9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 4 Of 5--Type 2
9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 2 Of 4--Type 3
9g6267 Marine Transmission--Gp--Part 1 Of 4--Mg514c--2.50 : 1 Ratio
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 1 Of 4--Type 2
5N***25Transmission Group-Marine; Marine Gear Group1
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9g6268 Marine Gear Group--Mg514c--3.00 : 1 Ratio--Part 2 Of 4--Type 1
9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 2 Of 5--Type 1
9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 2 Of 4--Type 3
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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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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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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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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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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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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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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9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 1 Of 4--Type 3
9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1 Ratio--Part 2 Of 4--Type 3
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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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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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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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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9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 4 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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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
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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9g6269 Marine Transmission Gp--Part 4 Of 4--Mg514c--3.50 : 1 Ratio
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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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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9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 4 Of 4--Type 3
9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 1 Of 5--Type 2
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 4 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 1 Of 4--Type 1
5N***25Transmission 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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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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9g6267 Marine Gear Group--Mg514c--2.50 : 1 Ratio--Part 2 Of 4--Type 1
9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1--Part 2 Of 4--Type 2
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 5 Of 5--Type 3
5N***26Transmission 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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9g6266 Marine Gear Group--Mg514c--2.00 : 1 Ratio--Part 2 Of 4--Type 1
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 4 Of 4--Type 1
5N***23Transmission Group-Marine; Marine Gear Group1
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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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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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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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9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 2 Of 4--Type 2
9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 2 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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9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 3 Of 4--Type 3
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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9g6268 Marine Gear Group--Mg514c--3.00 : 1 Ratio--Part 1 Of 4--Type 1
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 3 Of 5--Type 1
9g6266 Marine Gear Group--Mg514c--2.00 : 1 Ratio--Part 4 Of 4--Type 1
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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9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1 Ratio--Part 3 Of 4--Type 2
9g6266 Marine Transmission Gp--Part 2 Of 4 Mg514c-2.00 : 1 Ratio
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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9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 4 Of 4--Type 2
9g6266 Marine Transmission Gp--Part 4 Of 4--Mg514c--2.00 : 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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9g6268 Marine Transmission Gp-Part 1 Of 4-Mg514c-3.00 : 1 Ratio
9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 4 Of 4--Type 3
9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 1 Of 4--Type 2
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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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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9g6267 Marine Transmission Gp--Part 2 Of 4--Mg514c--2.50 : 1 Ratio
9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 3 Of 4--Type 2
9g6267 Marine Transmission Gp--Part 3 Of 4--Mg514c--2.50 : 1 Ratio
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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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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9g6266 Marine Transmission--Gp--Mg514c--2.00 : 1 Ratio--Part 2 Of 4--Type 2
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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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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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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9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 2 Of 4--Type 3
9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 5 Of 5--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 Gear Group--Mg514c--3.50 : 1 Ratio--Part 2 Of 4--Type 1
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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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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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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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 1 Of 5--Type 1
9g6269 Marine Gear Group--Mg514c--3.50 : 1 Ratio--Part 1 Of 4--Type 1
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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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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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 5 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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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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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
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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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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9g6269 Marine Transmission--Gp--Mg514c--3.50 : 1 Ratio--Part 3 Of 4--Type 3
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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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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9g6269 Marine Transmission Gp--Part 3 Of 4--Mg514c--3.50 : 1 Ratio
9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 3 Of 5--Type 2
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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9g6268 Marine Transmission Gp-Part 2 Of 4-Mg514c-3.00 : 1 Ratio
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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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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9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 4 Of 5--Type 1
9g6267 Marine Gear Group--Mg514c--2.50 : 1 Ratio--Part 1 Of 4--Type 1
9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1 Ratio--Part 1 Of 4--Type 3
9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 3 Of 5--Type 2
9g6268 Marine Transmission--Gp--Mg514c--3.00 : 1 Ratio--Part 1 Of 4--Type 2
9g6268 Marine Transmission Gp-Part 3 Of 4-Mg514c-3.00 : 1 Ratio
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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9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 4 Of 5--Type 2
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 3 Of 4--Type 3
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
9g6267 Marine Gear Group--Mg514c--2.50 : 1 Ratio--Part 3 Of 4--Type 1
9g6269 Marine Gear Group--Mg514c--3.50 : 1 Ratio--Part 3 Of 4--Type 1
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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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 : 1 Ratio--Part 5 Of 5--Type 3
5N***27Transmission Group-Marine; Marine Gear Group1
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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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9g6269 Marine Transmission Gp--Part 2 Of 4-- Mg514c--3.50 : 1 Ratio
9g6271 Marine Gear Group--Mg514c--6.00 : 1 Ratio--Part 5 Of 5--Type 2
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 1 Of 3--Type 1
5N***26Transmission 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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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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9g6266 Marine Transmission Gp--4--Part 3 Of 4 Mg514c--2.00 : 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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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 3 Of 4--Type 2
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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9g6270 Marine Gear Group--Mg514c--4.50 : 1 Ratio--Part 2 Of 5--Type 2
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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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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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
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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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 4 Of 4--Type 3
5N***22Transmission Group-Marine; Marine Gear Group1
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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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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--Part 1 Of 4 Mg514c--2.00 : 1 Ratio
9g6267 Marine Transmission--Gp--Mg514c--2.50 : 1 Ratio--Part 3 Of 4--Type 3
3n8525 Modulating Control Valve Assembly
6t1823 Control Valve Assembly
3n8515 Pressure And Regulator Valve Assembly
9g6415 Selector Valve Assembly
7l7310 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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5n3789 Clutch Assembly
5n3790 Clutch Assembly
5n7497 Clutch Group--Provided Field Replacement For 5n3980 Shown On Page 230f-1
5n7329 Clutch Group--Type 1
5n3980 Clutch Group
5n4156 Clutch Group--Replaced By 5n1730 Shown On Page 232b
5n7170 Clutch Assembly
5n7169 Clutch Assembly
5n7329 Clutch Group--Type 2
5n6479 Clutch Group
5n7330 Clutch Group--Type 2
5n7496 Clutch Group
5n7330 Clutch Group--Type 1
5n1729 Clutch Group
5n2851 Clutch Group--Replaced By 5n1729 Shown On Page 231b
5n4155 Clutch Group--Replaced By 5n1729 Shown On Page 231b
5n1730 Clutch Group
5n2853 Clutch Group--Replaced By 5n1730 Shown On Page 232b
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
7n8881 Drive Gp-Auxiliary-2 Groove Pulley
1n3270 Drive Gp-Auxiliary-L.H. Front
7n8750 Drive Gp-Auxiliary-3 Groove Pulley
4n8505 Auxiliary Drive Group--R.H. Rear--Type 1
4n8505 Drive Gp-Auxiliary-R.H.-Rear
4n8479 Auxiliary Drive Group
4n8509 Hydraulic Pump Drive Group--L.H. Rear And L.H. Front
7n2642 Pump Drive Group
7n2645 Pump Drive Group
9n16 Tachometer Drive Group
9N***16Drive Group-Tachometer; Tachometer Drive Group1
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7n2419 Tachometer Drive Group--Dual--Type 1
6n226 Tachometer Drive Group
7n2419 Tachometer Drive Group--Dual--Type 2
4n1402 Drive Gp-Tachometer
4N***02Drive Group-Tachometer; Tachometer Drive Group-Single1
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6n8791 Drive Gp-Tachometer
6N***91Drive Group-Tachometer; Drive Gp-Tachometer-Single1
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3n7984 Electric Tachometer Group--24 Volt
3n8161 Electric Tachometer Group--32 Volt
6n3188 Front Power Take-Off Group--Two Plate Clutch--Type 2
6n3188 Front Power Take-Off Group--Two 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
6n3535 Front Power Take-Off Group--Single Plate Clutch--Type 3
6n3535 Front Power Take-Off Group--Single Plate Clutch--Type 1
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
5n7023 Instrument Panel Lines Group
5n5769 Instrument Panel Lines Group--Type 1
5n5769 Instrument Panel Lines Gp-Type 2
5n7021 Instrument Panel Lines Gp
7n3055 Lines Gp-Oil Supply-Rear-L.H.
7n3055 Oil Supply Lines Group--Rear L.H.--Type 1
7n3057 Oil Supply Lines Group--Front L.H.
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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6n3549 Instrument Panel Mounting Group--Type 1
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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6n3549 Instrument Panel Mounting Gp--Type 3
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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8n7437 Instrument Panel Mounting Gp-L.H.-Duplex
8N***37Mounting Group-Instrument Panel; Instrument Panel Mounting Group-L.H.1
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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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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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6n9038 Panel Gp--Instrument--R.H.
6n9893 Instrument Panel Group--L.H.--4 Gauge--Type 1
3n6641 Dual Instrument Panel Group--24 Or 32 Volt--Electrical Instruments--Type 2
5n8281 Panel Gp--Instrument--Dual--24/32 Volt
6n9893 Panel Gp-Instrument-L.H.-4 Gauge
5n8283 Panel Gp--Instrument--Single--Mechanical
3n6642 Single Instrument Panel Group--24/32 Volt--Electrical Instruments-- Type 3
6n2976 Instrument Panel Group--Mechanical Instruments--Type 2
3n6642 Single Instrument Panel Group--24 Or 32 Volt--Electrical Instruments-- Type 1
3n6874 Panel Gp--Instrument--Single
5n8286 Instrument Panel Group
6n9893 Instrument Panel Group-L.H.-4 Gauge-Type 3
3n6641 Dual Instruments Panel Gp--24 Or 32 Volt--Electrical Instruments
3n6642 Single Instrument Panel Group--24 Or 32 Volt--Electrical Instruments-- Type 2
6n9086 Instrument Panel Group--L.H.--4 Gauge--Type 1
3n6642 Panel Gp--Instrument--Single--Electrical
3n6641 Panel Gp--Instrument
3n8553 Instrument Panel Group--Type 2--Replaced By 5n8286
3N***53Panel Group-Instrument; Panel Group1
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6n9038 Instrument Panel Group--Type 3
3n6641 Dual Instrument Panel Group--24 Or 32 Volt--Electrical Instruments-- Type 1
6n9086 Instrument Panel Group--L.H.--4 Gauge--Type 3
6n9038 Instrument Panel Group--Type 1
3n6875 Dual Instrument Panel Group--12 Volt--Mechanical Instruments
2w5991 Panel Gp--Instrument--Single
2W***91Panel Group-Instrument; -Single1
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6n2976 Instrument Panel Group--Mechanical Instruments--Type 1
3n6873 Single Instrument Panel Group--12 Volt--Electrical Instruments
6n9086 Instrument Panel Group--L.H.--4 Gauge--Type 2
6n2976 Instrument Panel Group--Mechanical Instruments--Type 3
6n9038 Instrument Panel Group--Type 2
5n8282 Panel Gp--Instrument--Single
6n9893 Instrument Panel Group--L.H.--4 Gauge--Type 2
3n8553 Instrument Panel Group--Type 1--Replaced By 5n8286
3N***53Panel Group-Instrument; Panel Group1
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3n6874 Single Instrument Panel Group--12 Volt--Mechanical Instruments--
3n6872 Dual Instrument Panel Group--12 Volt--Electrical Instruments
5n7399 Front Clutch Power Take-Off Group
5n7499 Front Power Take-Off Group--Single Plate Clutch--Type 3
5n7499 Front Power Take-Off Group--Single Plate Clutch--Type 1
5n7499 Front Power Take-Off Group--Single Plate Clutch--Type 2
5n7400 Front Power Take-Off Gp-2 Plate Clutch
4n6391 Auxiliary Drive Pulley Group--Sea Water
2n8908 Sump Pump Group
6n3943 Sump Pump Group--Type 1
1n3299 Sump Pump Gp
6n3943 Sump Pump Group--Type 2
6n3943 Sump Pump Gp--Type 3
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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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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4w4967 Tachometer Gp
6n7939 Front Power Take-Off Group--Single 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
6n7938 Front Power Take-Off Group--2 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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6n4018 Air Starting Motor Group--L.H.--Without Control Group--Replaced By 8n577 Shown On Pages 131a And 131b
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
6n4027 Air Starting Motor Group--R.H.--Without Control Group--Type 2--Replaced By 8n576 Shown On Pages 133c And 133d
6n4027 Air Starting Motor Group--R.H.--Without Control Group-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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2n6397 Alternator Assembly--24 Volt, 35 Ampere
2N***97Alternator As; Alternator Assembly1
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2n6398 Alternator Assembly-24 Volt, 35 Ampere-Field Installation
3n7683 Alternator Group--24 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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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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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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6t1395 Alternator Gp-24 Volt-35 Ampere
4n3987 Alternator Gp--32 Volt, 60 Ampere--Part 1 Of 2*R
4N***87Alternator Group; Alternator Group1
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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 2 Of 2*R
4N***87Alternator Group; Alternator Group1
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3n7684 Alternator Group--30 Or 32 Volt, 60 Ampere
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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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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3t6352 Alternator Group--24 Volt, 35 Ampere--Part 1 Of 2
3t6352 Alternator Gp--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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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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9g4574 Alternator Gp--Nippondenso
9G***74Alternator Group-Charging; Alternator Group (Nippondenso)1
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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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3n5680 Alternator Group--24 Volt, 35 Ampere
9g8255 Alternator Gp-Delco-Remy-24 Volt, 35 Ampere-Part 2 Of 2
9g8255 Alternator Group--Delco-Remy--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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4n6299 Alternator Group--32 Volt, 60 Ampere--Delco-Remy
4N***87Alternator Group; Alternator Group1
4N***99Alternator Group-Charging1
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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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3n4654 Battery Group-30 Volt, 300 Ampere Hours
7l7871 Battery Gp-24 Volt, 172 Ampere
7L***71Battery Group; (24-Volt)(24-Volt)1
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2n1943 Battery Group-30 Volt, 172 Ampere Hours
7l7872 Battery Gp-24 Volt, 220 Ampere
1h1342 Starting Battery Gp-30 Volt, 204 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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5n9177 Contactor Gp
5N***77Contactor Group; -Water Temperature Shut-Off1
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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
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-
3n9595 Contactor Group--Type 3
3N***95Contactor Group; Contactor Group Speed Switch1
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5n5725 Contactor Gp-Oil Pressure & Water Temperature
5N***25Contactor Group; Contactor Group Oil Pressure And Water Temperature1
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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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2w8914 Contactor Gp
3n9595 Contactor Group--Type 2
3N***95Contactor Group; Contactor Group Speed Switch1
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3n8556 Contactor Mounting Group--Type 3
3n8556 Contactor Mounting Group--Type 2
3n8556 Contactor Mounting Group--Type 1
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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7c9969 Fastener Gp--Part 1 Of 2
7w5088 Fastener Gp
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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7c9969 Fastener Gp-Part 2 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
2w8905 Junction Box Gp
2w8907 Junction Box Gp
2W***07Junction Box Group1
6K***91Plug-Button1
7W***07Junction Box Group1
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4w9602 Junction Box Gp-Part 1 Of 2
7w8003 Junction Box Gp-Part 1 Of 2
7w8001 Junction Box Gp
4W***01Junction Box Group1
7W***01Junction Box Group1
7W***52Diode Group1
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7w8007 Junction Box Gp-Part 1 Of 2
7w8003 Junction Box Gp--Part 1 Of 2
7w8003 Junction Box Gp-Part 2 Of 2
4w9602 Junction Box Gp-Part 2 Of 2
7w8003 Junction Box Gp--Part 2 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
2w8903 Junction Box Gp
2W***03Junction Box Group1
7W***03Junction Box Group1
7W***51Switch Group; -Shutoff1
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7w8007 Junction Box Gp-Part 2 Of 2
3n859 Junction Box Gp
3N***59Junction Box Group; Junction Box Group1
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6n4148 Air Starting Motor Group--Type 1
6n4147 Air Starting Motor Group--Type 1
6n4147 Air Starting Motor Gp-Type 2
6n4148 Air Starting Motor Gp--Type 2
8n579 Motor Gp-Air Starting-L.H.-Part 1 Of 2
8n578 Air Starting Motor Group--L.H.--Part 2 Of 2
8n579 Air Starting Motor Group--L.H.--Part 2 Of 2
8n577 Motor Gp-Air Starting-L.H.-Part 1 Of 2
8n0578 Motor Gp-Air Starting-L.H.-Part 1 Of 2
8n0577 Motor Gp-Air Starting-L.H.-Part 2 Of 2
8n576 Starting Motor Gp-Air-R.H.-With Control Valve-Part 1 Of 2
8n575 Air Starting Motor Group--R.H.--Part 2 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
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
7n9678 Alternator Mounting Group--Type 1
8n8001 Mounting Gp--Alternator
7n9677 Alternator Mounting Group--Type 1
8n8000 Alternator Mounting Group--Type 1
7n9677 Alternator Mounting Group--Type 2
6n2925 Alternator Mounting Group--Type 1
8n8001 Alternator Mounting Group
6n3526 Alternator And Mounting Group--24 Volt, 35 Ampere--Type 1
8n8000 Alternator Mounting Group--Type 2
1w1806 Mounting Gp--Alternator
6n2925 Alternator Mounting Group--Replaced By 7n9677
6n3526 Alternator Mounting Group--Type 3--Replaced By 7n9678 Shown On Page 164c
7n9678 Alternator Mounting Group--Type 2
4w5579 Mounting Gp--Alternator
4w9587 Mounting Gp-Contactor
4w9580 Mounting Gp-Contactor
8n5626 Mounting Gp--Contactor
4w9583 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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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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6n1059 Glow Plug Group--4 Required--32 Volt
3n8663 Shut-Off Gp-Mechanical
7n236 Shut-Off Gp-Manual
3n8164 Shut-Off Gp-Air
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 1
3n7478 Overspeed Contactor Group--Type 2
3N***78Shut-Off Group-Air; Overspeed Contactor Group1
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3n8164 Air Shut-Off Group--24 Volt--Type 3
3n7478 Overspeed Contactor Group--Type 1
3N***78Shut-Off Group-Air; Overspeed Contactor Group1
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3n8166 Air Shut-Off Group--24 Volt
3N***66Shut-Off Group-Air; Air Shut-Off Group--24 Volt1
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3n8164 Air Shut-Off Group--24 Volt--Type 2
1w1223 Shut-Off Gp-Electrical-24-32 Volt
4n3402 Electrical Shut-Off Group--24 Or 32 Volt--Type 1
4n3402 Electrical Shut-Off Group--24 Or 32 Volt--Type 2
8n2202 Electrical Shut-Off Group--12 Volt Solenoid
5n8293 Electrical Shut-Off Group--24 Or 32 Volt
5N***93Shut-Off Group-Electrical; -Governor1
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2w6665 Shut-Off Gp-Electrical
2W***65Shut-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 1
6n5146 Air Silencer Group--R.H.--Type 2
6n4870 Air Silencer Group--L.H.--Type 1
3t3421 Solenoid Switch Group
3t8635 Solenoid Assembly--24 Volt
3t5051 Solenoid Assembly--32 Volt
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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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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3t2780 Starting Motor Gp-Electric-24 Volt-Part 1 Of 3*R
4n1061 Electric Starting Motor Group--24 Volt--Type 1
3t2779 Starting Motor Gp-Electrical-32 Volt-Part 3 Of 3
6n9677 Electric Starting Motor Group--24 Volt--Part 2 Of 3
3t8948 Starting Motor Gp-Electric-Part 1 Of 3
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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3t8948 Starting Motor Gp-Electric-Part 2 Of 3
6n9677 Electric Starting Motor Group--24 Volt--Part 3 Of 3
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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3t2780 Starting Motor Gp-Electric-24 Volt-Part 2 Of 3*R
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
6n3229 Electric Starting Motor Group--32 Volt--L.H. Mounted--Type 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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3t2780 Starting Motor Gp-Electric-24 Volt-Part 3 Of 3*R
4n1061 Electric Starting Motor Group--24 Volt--Type 4
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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3t2779 Electric Starting Motor Group--32 Volt--Part 1 Of 3
4n959 Electric Starting Motor Group--24 Volt--Part 1 Of 2
3t8948 Starting Motor Gp-Electric-Part 3 Of 3
6n9677 Electric Starting Motor Group--24 Volt--Part 1 Of 3
4n959 Electric Starting Motor Group--24 Volt--Part 2 Of 2
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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6n3229 Electric Starting Motor Group--32 Volt--L.H. Mounted
4n1061 Electric Starting Motor Group--24 Volt--Type 3
6n3229 Starting Motor Gp-Electric-32 Volt L.H. Mounted
6n5123 Solenoid Switch Assembly--24 Volt
4m1812 Solenoid Switch Assembly--24 Volt
5l8595 Solenoid Switch Assembly--32 Volt--Type 1
5l8595 Solenoid Switch Assembly--32 Volt--Type 2
7c9365 Contactor As
7C***65Switch As-Temperature; (Water Temperature)1
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2w8955 Switch Gp-12 Volt Dc Relay
2w8957 Switch Gp-32 Volt Dc Relay
2W***57Switch Group; -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
2w8956 Switch Gp-24 Volt Dc Relay
2W***56Switch Group; -Electric Shutoff-Air Inlet Shutoff1
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7w8051 Switch Gp
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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7n2417 Switch Group
5n8261 Switch Gp-Magnetic
5N***61Switch Group; -Air Inlet Shutoff1
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6n3800 Heat Start Switch Gp
8n0531 Switch Gp-Heat Start
8n6132 Heat Start Switch Gp
8n5882 Heat Start Switch Gp
1w3669 Heat Start Switch Gp
8n5881 Heat Start Switch Gp
8n0530 Switch Gp-Heat Start
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
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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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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8l4849 Wiring Gp-Automatic Start-Stop
05***71Grommet-Junction Box1
1H***18Grommet--Junction Box1
1H***66Clip-Wire Provides Loose Parts6
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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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3408B serial number reference

The engine serial plate is riveted to the block, typically near the fuel injection pump housing or on the front left side below the valve cover. On marine power packages it can also be stamped on the flywheel housing rather than on the boat's own hull plate. The first three characters are the prefix and tie the unit to a specific build/configuration block (marine, industrial, generator set, gas, or reman); the digits that follow are the unit's production sequence within that block, not a build date.

PrefixIdentifies
1LG3408B marine engine
8RG3408B marine engine
99U3408B marine engine
67U3408B industrial engine
9TD3408B industrial engine
78Z3408B generator-set engine
2BG3408B generator-set engine
BFD3408B remanufactured (reman) exchange engine
6RJ3408B gas engine
28V3408B truck engine

Frequently asked questions

What engine is the Caterpillar 3408B?

It's a 65-degree V8, four-stroke diesel displacing 18.0 liters (1,099 cu in), with a 137.2 mm bore, 152.4 mm stroke, and a 14.5:1 compression ratio. Fuel delivery is fully mechanical unit injection with a hydromechanical governor and no electronic engine controls. Caterpillar built it in turbocharged (TA) and turbocharged-aftercooled (DITA) marine arrangements, with documented propulsion ratings spanning roughly 330 to 485 hp (246 to 362 kW) at 1800 rpm depending on configuration.

What's the operating weight of a Caterpillar 3408B?

The base long block runs a dry net weight of roughly 1,640 to 1,680 kg (3,620 to 3,700 lb). Complete marine propulsion packages, with marine gear, heat exchanger or keel-cooling plumbing, and sound shielding, commonly weigh more, roughly 1,720 to 1,990 kg (3,800 to 4,390 lb); actual figures vary by dealer package and accessories fitted.

What replaced the Caterpillar 3408B?

Within the 3408 family it sits between the base 3408 and the later dual-turbo 3408C, with the fully electronic 3408E following after it. Caterpillar eventually phased out the whole 3408 platform in favor of its electronically controlled C-series marine diesels as emissions regulations tightened.

What 3408B owners discuss

What do owners and mechanics say about the 3408B's overall reliability in marine service?
Consensus is that the 3408B is a tough, long-lived engine when maintenance stays current. Reported base-engine life to first major overhaul ranges roughly from 8,000 to 16,000+ hours depending on load factor, duty cycle, and how well oil and coolant intervals were kept — figures vary by configuration and application, so treat any single number as a rough guide. Many vessels are still running an original block after 25 to 40 years of service, and a properly rebuilt 3408B is commonly reported to deliver another 10,000-15,000 hours or more. The cast-iron block and all-mechanical fuel system are cited most often as the reason it keeps running in remote or offshore locations where dealer support is thin.
What's the most common wear item mechanics flag on a working 3408B?
The raw-water side of the cooling system is the recurring theme. Gear-driven, bronze-impeller raw water pumps are reported to corrode and lose flow at low RPM over time, and a neglected impeller gets blamed for repeat exhaust-hose and elbow damage once cooling water can't keep pace with exhaust heat. Aftercooler cores are the second most-cited wear item — mineral scale carried by raw water builds up inside the core and chokes intake airflow, so pulling and cleaning (or acid-flushing) the aftercooler on a schedule is treated as routine rather than optional on a boat with real hours on it.
How does the 3408B differ in everyday operation from a later electronic 3408, and does that matter to owners?
The 3408B runs a mechanical unit-injector fuel system with a mechanical governor — no ECM, no electronic diagnostic tool needed to chase a fault. Owners and mechanics working boats value this: a competent diesel mechanic can time and rebuild the injection pump with hand tools rather than a laptop, and there's nothing to fail electronically in the fuel-timing path itself. The trade-off is less refined smoke and fuel control and no fault-code readout — a rough runner has to be diagnosed mechanically (compression, injector pop-test, boost pressure) rather than pulled off a scan tool. This mechanical-vs-electronic split is specific to the 3408B generation and does not carry over to later electronically governed versions of this engine family.
What electrical or sensor problems come up most with these engines?
Being a largely mechanical engine, the 3408B carries few sensors, so complaints center on the handful it has. The engine oil pressure sender, mounted near the oil filter housing, is a repeat culprit for a dead or erratic dash gauge — corroded or loose wiring at the sender connector is the first thing to check before condemning the sender itself. The magnetic pickup feeding the tachometer is the other common gremlin: a weak or intermittent signal shows up as a jumpy or dead tach even though the engine is running fine. Because a false or erratic oil pressure reading can mask a genuine lubrication problem, have your dealer verify actual oil pressure with a mechanical gauge before dismissing a gauge complaint as a simple sender fault.
Does modern diesel fuel cause problems in an older 3408B?
Owners and mechanics report that today's low-sulfur, low-lubricity diesel is harder on the mechanical injection pump and unit injectors than the fuel these engines were originally designed around, showing up over time as eroded injector tips and accelerated pump wear. The remedy most often mentioned is running a lubricity additive and staying strict about fuel filtration and water separation, since the mechanical injection system is unforgiving of both poor lubricity and contamination.
What does persistent black smoke usually mean on one of these engines?
Forum consensus points to two likely causes, in rough order of likelihood: worn or eroded injector orifices over-fueling the cylinders, or a restricted air supply — dirty air filter, failing turbocharger, or a leaking intake gasket — starving combustion of air. The standard field check is to confirm boost and air delivery first; if smoke clears once air supply is verified good, the turbo or intake side is the culprit, and if not, injectors are the next suspect. Because a failing turbo bearing can shed debris into the intake and cause secondary damage, have your dealer verify turbocharger condition before extended running on a smoking engine.
What should a buyer check before purchasing a boat powered by a 3408B?
Get full service records first — regular oil and fuel-filter intervals and coolant changes matter more on this platform than hour count alone. On a physical inspection: look for external corrosion and heat-stress discoloration on the block, manifolds, and oil pan; check engine beds and mounts for cracks, moisture staining, or misalignment; pull an oil sample and check color — normal is black, gray or milky indicates coolant intrusion. During a sea trial, confirm the engine reaches its full rated RPM under load, watch coolant temperature against spec, and listen for turbo whistle or bearing noise. Check the marine gear fluid too — dark, burnt-smelling fluid or metallic specks on a wiped dipstick point to gear wear separate from the engine. Given the cost of a major repair or repower, have your dealer or a qualified marine diesel surveyor verify compression and injector condition, along with an oil analysis, 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 3408B. Related factory variants of the same model family:

3408B3408B3408B3408B

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