Caterpillar MT865
Caterpillarchallenger

Caterpillar MT865

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar MT865 Challenger is a high-horsepower, rubber-tracked row-crop and tillage tractor riding on a rubber-belt crawler undercarriage with oscillating bogie wheels instead of a wheeled axle. Built 2002-2020, it carried a different engine by series: a Caterpillar C16, 15.8 L (964 cu in) inline-six rated about 500 hp gross at 2100 rpm on the base MT865 (2002-2004); a Caterpillar C18 (ACERT on later production), 18.1 L (1,105 cu in) inline-six rated about 510 hp on the MT865B (2005-2008) and about 525 hp on the MT865C (2009-2013); and an AGCO Power 16.8 L V12 rated about 540 hp, 583 hp maximum, on the MT865E (2014-2020), the only generation not running a Caterpillar engine. Operating weight runs from about 18.6 tonnes (41,000 lb) on the base unit to roughly 19.3 tonnes (42,600 lb) on the E-series. All generations share a 16-speed full-powershift transmission, closed-center load-sensing hydraulics with 4 to 6 rear remote valves, and factory-optional 1000 rpm rear PTO, drawbar, and 3-point hitch configurations.

AGCO acquired Caterpillar's agricultural Challenger tractor line in 2002 and kept building the MT800 series under the Cat name, sourcing Caterpillar engines through three full generations before switching to AGCO's own power for the final series. The base-to-B update stepped up to the larger C18 block; the B-to-C update carried ACERT emissions technology forward with a modest power increase plus hydraulic, cab, and electronics updates; the C-to-E update was the real break, dropping the Caterpillar engine entirely for an AGCO Power V12 with SCR-based emissions control. In the used and parts market, the MT865 nameplate spans four distinct powertrains under one bare number, so serial-number and engine identification matter more than the model badge alone. These tractors stay in demand on large-acreage row-crop and tillage operations for their flotation and pulling power, and undercarriage and reaction-arm bearing condition, not just engine hours, tend to drive resale value and parts spend.

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 MT865 specifications

Engine

Engine modelCaterpillar C16, turbocharged diesel, inline-6, liquid-cooled, 15.5:1 compression ratio
Displacement15.8 L (964 cu in), bore x stroke 140 x 171 mm (5.51 x 6.73 in)
Gross power500 hp (372.9 kW) at 2100 rpm
PTO power416 hp (310.2 kW) claimed; 523.6 hp (390.4 kW) on test
EmissionsTier 2

Weights

Operating weight41,000 lb (18,597 kg) shipping weight
Ballasted / maximum weight50,000 lb (22,680 kg) ballasted operating weight; 60,000 lb (27,216 kg) maximum gross weight

Dimensions

Transport length22.0 to 22.5 ft (266 to 270 in / 675 to 686 cm), varies by series and drawbar/hitch configuration
Transport width11.7 to 11.8 ft (142 in / 360 cm) at base track gauge; wider with 27.5-36 in track options
Transport height (to cab)11.4 to 11.5 ft (138 in / 350 to 352 cm)
Wheelbase118.1 in (299 cm)
Track gauge, adjustable90 to 128 in (228 to 325 cm)
Track width options18, 27.5, 30, or 36 in (457, 698, 762, 914 mm) rubber belt
Ground clearance14.4 to 18.7 in (37 to 47 cm) — figures vary by series and measurement point; check the series-specific sheet

Performance

Maximum travel speed24.6 mph (39.6 km/h)
Transmission16 forward / 4 reverse full powershift
Drive systemRubber-belt crawler track (Mobil-trac type) with oscillating mid-wheels and coil-spring suspension; differential steering, speed-sensitive on later series
PTOIndependent rear PTO, 1000 rpm
Rear 3-point lift capacity19,500 lb (8,845 kg)
Drawbar power, tested379 hp (282 kW), tested
Rear hitchType III/IV; roller-type drawbar with 32-degree swing, rated to roughly 10,000 lb (4,536 kg) drawbar load
BrakesHydraulic wet-disc

Service capacities (summary)

Fuel tankabout 330 gal (1,249-1,254 L)
Hydraulic systemClosed-center, pressure-flow-compensated load-sensing circuit at 2,900 psi (200 bar); 4 to 6 remote valves
Hydraulic reservoirabout 70 gal (265 L) on the original MT865
Engine oil / cooling system capacitynot published in available spec sheets for this range — confirm with dealer service literature

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

MT865 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)Not published in publicly available spec sheets for this chassis mounting. Confirm the exact fill quantity against the OMM or dealer parts book for this engine and sump configuration.Cat DEO-ULS (API CJ-4) or Cat DEO (API CI-4/CI-4 PLUS) diesel engine oil. SAE 15W-40 for normal ambient service; step to Cat DEO Cold Weather SAE 0W-40 (or SAE 10W-30) in sustained sub-freezing climates. Match grade to the ambient-temperature chart printed in the OMM.
Cooling systemNot documented in the aggregator spec sheets or brochures reviewed for this model. Verify against the OMM's cooling-system fill chart for this engine and radiator package.Cat ELC (Extended Life Coolant) is listed as a standard factory feature on the MT800(B) series. Use Cat ELC premixed 1:1 with water for initial fill, or Cat ELC concentrate mixed 50/50; add Cat ELC Extender at the mid-life service point. Do not mix with conventional heavy-duty coolant/antifreeze.
Fuel tank330 US gal (approx. 1,249-1,254 L, rounding differs slightly by source), made up of a 305 US gal (1,155 L) base tank plus a 25 US gal (95 L) auxiliary tank that ships standard on this model.Ultra-low-sulfur No. 2-D diesel meeting the engine's emissions certification for normal service; blend with No. 1-D or a winterized blend in cold climates to prevent fuel gelling and filter plugging.
Hydraulic system, Powershift transmission, differential steering & final drives (combined reservoir)Approximately 70 US gal (265 L) total system fill. Factory literature for this series notes a single sight gauge checks the combined hydraulic, transmission, steering, differential and final-drive oil level, so the OMM does not break this out into separate per-compartment figures.Cat TDTO or Cat TDTO-TMS (Transmission/Drive Train Oil, multi-season/multigrade) is the standard Cat specification for this class of shared powertrain-hydraulic circuit; select the viscosity/grade called out for the expected ambient range in the OMM chart. Commercial oils that meet the Cat TO-4 specification are an accepted equivalent.
Final drives (each side)No separate fill point is documented for this model — the final drives draw from the combined hydraulic/transmission/differential reservoir listed above rather than a standalone case.Same fluid as the combined system: Cat TDTO / Cat TDTO-TMS. Do not substitute a straight gear oil unless the OMM specifically calls for one.
Grease (spec only)N/A — serviced by grease-point interval, not a fill capacity.Cat Multipurpose Grease (NLGI 2) for general chassis and undercarriage points. Where the OMM calls for heavier-load or extreme-duty points, use Cat Extreme Application Grease or Cat Prime Application Grease; drop to an NLGI 0/1 cold-weather grease in sustained sub-freezing service.

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

Caterpillar MT865 maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level before startup and top off with Cat DEO-ULS or Cat DEO to the ambient-temperature grade.
  • Check coolant level at the ELC (Extended Life Coolant) sight gauge or recovery tank.
  • Drain water and sediment from the fuel/water separator.
  • Walk both rubber tracks and check for cuts, exposed cord, and correct tension.
  • Weekly: check the combined hydraulic/transmission/differential/final-drive sight gauge and top off with Cat TDTO if low.
  • Weekly: grease all track-frame, drawbar, and hitch pivot points with Cat Multipurpose Grease.
Every 250 h
  • Change the reaction-arm (walking-beam) bearing oil at the final drive; hold this interval rather than stretching it.
  • Pull the reaction-arm bearing magnetic drain plug and inspect for coarse metal or heavy fuzz before refilling.
  • Change engine oil and replace the engine oil filter.
  • Check and adjust rubber track tension, and inspect guide-lug engagement at the drive wheel and idler.
  • Clean the cab fresh-air and recirculation filters.
  • Check battery electrolyte level and clean terminal connections.
Every 500 h
  • Repeat the reaction-arm bearing oil change and magnetic-plug inspection if running the shorter end of its service window.
  • Replace the primary and secondary fuel filters.
  • Replace the combined hydraulic/transmission/differential/final-drive filter element.
  • Pull an engine oil sample for analysis to track wear metals.
  • Inspect drive belts and turbocharger boost lines for leaks.
  • Check guide-lug wear at the drive wheel and front idler for belt roll-off risk.
Every 1,000 h
  • Replace the engine air cleaner secondary element.
  • Inspect front idler and bogie/mid-roller wear; a track and bogie set commonly runs toward 1,500 hours before replacement is worth it, so plan ahead of that mark.
  • Check CAN-network wiring and connectors near the cab and swivel-armrest console for chafing before trusting a fault-free dash.
  • Test battery condition and charging system output.
  • Pull a coolant sample and check ELC condition.
Every 2,000 h
  • Change the combined hydraulic/transmission/differential/final-drive system oil in full with Cat TDTO or TDTO-TMS.
  • Add Cat ELC Extender at the coolant's mid-life service point, or replace coolant if not on the extender program.
  • Inspect and, if worn, replace guide lugs, bogie wheels, and front idler components.
  • Work the full starting circuit end to end (battery disconnect, main relay, solenoid, ignition switch) even if starts are currently clean.
  • Confirm hydraulic coupler condition and case-drain plumbing at all rear remotes.
Every 4,000 h
  • Plan a full reaction-arm bearing and final-drive teardown if magnetic-plug metal content has been trending up.
  • Check and adjust engine valve lash per the applicable engine's service schedule.
  • Inspect the turbocharger core and wastegate actuator, and rebuild if boost loss or smoke appears.
  • Have the fuel injection system checked and calibrated by the dealer.
Every 6,000 h
  • Complete a full undercarriage rebuild covering tracks, bogie wheels, guide lugs, and front idlers together rather than piecemeal.
  • Rebuild the powershift transmission clutch packs if pressure tests show wear.
  • Replace ELC coolant outright once it has run past its extender-supported service life.

Servicing the MT865 beyond the schedule

Predictive Maintenance & Fluid Analysis

Watch the reaction-arm (walking-beam) bearing at the final drive closest of all wear points: pull its magnetic drain plug at every oil change and treat coarse metal or heavy fuzz as an early-failure warning, not routine debris. Run S·O·S oil sampling on the Cat C16/C18 (or AGCO Power V12) engine and the combined hydraulic-transmission-differential reservoir, since one sight gauge covers all four circuits and a wear-metal spike can originate anywhere in that shared system. Track guide-lug and bogie-wheel wear trends before a track rolls off under load.

Corrective & Common Repairs

Reaction-arm bearing wear is the top driveline complaint; caught via the magnetic drain plug it is a bearing-only fix, left alone it becomes a multi-day teardown. Chafed CAN-network wiring under the swivel-armrest console causes false shift faults, dropped displays, and phantom no-crank complaints more often than actual transmission or starter failure, so check connectors and grounds before condemning either. Confirm hydraulic coupler style before ordering hoses, since it changed between series. On the E-series, source AGCO Power-specific fuel and turbo parts; Cat parts do not cross over.

Overhaul & Rebuild Points

Full undercarriage rebuilds, tracks, bogie wheels, guide lugs, and front idlers together, are the largest recurring expense on any MT865 generation; owners report service life trending toward 1,500 hours under normal field conditions, though soil type and ballast shift that number. A reaction-arm bearing left past its early-warning stage forces a final-drive housing teardown instead of a simple oil-and-plug service. On the engine side, plan turbocharger core rebuilds and fuel-injection calibration around boost loss or smoke, and pressure-test the powershift clutch packs before assuming a full transmission rebuild is needed.

Seasonal & Environment Servicing

Before spring fieldwork, verify track tension and guide-lug engagement after winter storage, since an over-tight or loose belt rolls off under the first heavy draft load. Confirm the reaction-arm bearing and combined hydraulic/transmission reservoir levels before the season's first hours, since one shared sight gauge covers all four circuits. Drain fuel-water separators more often during humid harvest storage, and blend in a winterized fuel during cold snaps to prevent gelling. Grease every track-frame, drawbar, and hitch pivot before winter layup to keep moisture out of the pins.

MT865 common service parts

Part numberPart
1R-0762Filter As-FuelCheck fitment →
161-1705Sensor As-PressureCheck fitment →
111-2645Valve-Pump BypassCheck fitment →
1R-0716Filter As-Engine OilCheck fitment →
9S-8752Nut-FullCheck fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

MT865 fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
E100Engine oil pressure faultLow oil level, plugged oil filter, or a failing oil pressure sensorShut the engine down safely, check oil level and condition, then have the dealer verify the sensor and pump if the level is correct
E110Engine coolant temperature faultLow coolant level, blocked radiator or screens, or a fan drive problemCheck coolant level, clean the radiator and screens, verify fan operation, contact dealer if it recurs
E97Water detected in fuelCondensation or contaminated fuel collecting in the fuel/water separator bowlDrain the fuel/water separator, check fuel quality and source, contact dealer if the code returns
E102Boost (intake manifold) pressure faultRestricted air filter, a leaking or collapsed intake hose, or a turbocharger issueInspect the air filter and intake ducting for restriction or leaks, contact dealer if unresolved
E107Air intake filter restriction/pressure faultClogged air filter element or a restricted intake pathInspect and clean or replace the air filter element, check intake ducting for blockage
D130Battery voltage too lowWeak or discharged battery, loose or corroded terminals, or a charging system faultCheck battery terminal connections for tightness and corrosion, test the battery and charging system
D149CAN bus communication signal fault (dash loses data from the vehicle network)Damaged or corroded harness connector, or a module dropout on the CAN busCheck harness connectors for corrosion or damage, have the dealer run bus-level diagnostics
T4128Transmission control unit faultInternal TCU fault or a wiring problem that trips transmission protection modeReduce load and cycle the key; if the fault stays, have the dealer diagnose the transmission control unit

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

MT865 attachments & work tools

Drawbar systems

Standard is a fixed Category 5 drawbar rated near 11,000 lb (5,000 kg) vertical load, used to pull tillage, seeding, and scraper/ripper implements. An optional wide-swing roller drawbar (about +/-32 degree swing) is also offered.

Rear 3-point hitch

Optional rear 3-point hitch (Category 5 class) mounts rippers, subsoilers, and other draft tools. Reported lift capacity is roughly 15,000-20,000 lb (6,800-9,100 kg) depending on configuration.

Rear PTO

Rear PTO is a factory option, not standard equipment, engaged and monitored from the cab tractor-management display. Where fitted it runs independent 1000 rpm output for PTO-driven implements.

Hydraulic remote valve kit

Configurable rear remote valve package (commonly in the 4-6 remote range, with case-drain on higher packages) fed by a high-flow pump in the roughly 50-60 US gpm (190-227 L/min) class. Powers hydraulically actuated implements such as folding toolbars, air-seeder carts, and drawbar/hitch cylinders.

Ballast and weight kits

Factory front-frame and chassis ballast packages are offered to balance drawn-implement loads, hold headland traction, and manage drawbar pull. Weight selection is implement- and field-specific rather than a single fixed kit; dealers size it with a ballast calculator.

Undercarriage belt/track width

Rubber-belt undercarriage is offered in a range of belt widths, roughly 18-36 in (457-914 mm) across the size class, with adjustable gauge width in the neighborhood of 88-128 in (2,235-3,251 mm). Exact width menu and gauge range vary by series/generation and should be confirmed against the specific model-year option list.

Factory guidance/auto-steer readiness

Factory-integrated auto-guide (GPS auto-steer) readiness is available through the cab management center, letting the tractor hold precision lines while pulling or carrying tillage, seeding, or spraying implements without an aftermarket retrofit.

Drawbar quick-hitch coupler

A mechanical quick-hitch pin coupler for the drawbar is offered across the MT800-series size class, sharing a common coupler family with sibling models, so pull-type implements can be swapped without manual pin alignment.

Guarding/protection packages

Factory guard packages cover the radiator/grille, frame, engine-bay bottom, and powertrain area for rough-field and high-debris tillage work. Coverage and configuration vary by series and are best confirmed against the model-year parts book.

All MT865 assemblies by section

Every catalogued assembly group for the Caterpillar MT865. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
205-1231 Elbow Gp-Air Inlet
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
10***25Gasket; (Air Inlet Manifold)(Intake Manifold Inlet)1
10***03Elbow; (Air Inlet)1
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205-1232 Elbow Gp-Air Inlet
10***25Gasket; (Air Inlet Manifold)(Intake Manifold Inlet)1
10***03Elbow; (Air Inlet)1
20***32Elbow Group-Air Inlet1
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114-1904 Lines Gp-Air
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
11***04Lines Group-Air1
5H***04Packing,Preformed Elbow Part Of Kit P/N 5r***262
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126-0076 Lines Gp-Air -Turbocharger Outlet
12***73Elbow1
12***76Lines Group-Air; -Turbocharger Outlet1
12***29Clamp; (V-Band)1
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135-6552 Manifold Gp-Exhaust
10***54Manifold-Exhaust; (Center)1
10***08Manifold-Exhaust; (End)(End)2
10***92Stud-Taperlock; (3/8-16x3.93in)11
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117-2688 Manifold Gp-Exhaust
10***13Gasket6
11***89Manifold-Exhaust; (Center)1
11***15Stud-Taperlock; (M10x85-mm Oal)12
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116-5405 Manifold Gp-Inlet
11***05Manifold Group-Inlet1
11***06Manifold; (Inlet)1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
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192-3032 Turbocharger Gp
11***87Bolt; (M6x0.04x10.4-mm)(6mm X 0.04 Thd)1
13***75Clamp As; (Service Repair)1
16***58Clip-Hose1
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191-2248 Turbocharger Gp
19***48Turbocharger Group1
19***32Turbocharger Group1
1S***95Gasket-Turbocharger To Manifold; Gasket Turbocharger To Manifold1
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191-5108 Turbocharger Gp
11***87Bolt; (M6x0.04x10.4-mm)(6mm X 0.04 Thd)1
12***53Clamp As; (Turbine)1
16***58Clip-Hose1
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193-3931 Turbocharger Gp
19***08Turbocharger Group1
19***31Turbocharger Group1
1S***95Gasket-Turbocharger To Manifold; Gasket Turbocharger To Manifold1
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Basic Engine
133-9907 Adapter Gp-Pump Drive
13***06Adapter1
13***07Adapter Group-Pump Drive; -Remote1
1B***67Ball Bearing2
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122-1248 Base Gp-Valve Cover & Inj Harn
10***18Clip3
10***19Clip3
10***34Kit-Receptacle; (12-Pin)(Valve Cover & Inj Harness)1
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138-2546 Bracket Gp-Support
13***46Bracket Group-Support; -Refrigerant Compressor1
16***80Bracket1
6V***22Bolt (M10x1.50x35mm)2
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171-3062 Camshaft Gp
11***59Cover1
12***11Journal1
13***68Gasket; (Camshaft Cover)1
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185-9699 Camshaft Gp
10***89Cover1
11***36Screw-Flat Head; (5/16-18x0.875-In)3
18***99Camshaft Group; (Single)1
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115-2985 Cover Gp-Cylinder Block
11***85Cover Group-Cylinder Block1
4P***87Cover1
6V***50Seal-O-Ring (Id=39.34mm)1
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212-9551 Cover Gp-Cylinder Block
06***55Seal-O-Ring (Id=47.22mm)2
21***51Cover Group-Cylinder Block1
6V***17Bolt; (M8x1.25x20-mm)(At Location Y)4
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107-6737 Cover Gp-Cylinder Block
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
10***37Cover Group-Cylinder Block; -Remote1
4N***99Gasket; (Oil Drain)1
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107-6736 Cover Gp-Cylinder Block
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
10***36Cover Group-Cylinder Block; -Remote1
4N***99Gasket; (Oil Drain)1
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192-2042 Cover Gp-Engine
12***81Seal-Integral; (Air Compressor Mounting)1
14***14Cover1
16***87Hose-Fumes Disposal1
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235-8781 Cover Gp-Front Housing
03***53Seal-O-Ring; (08.92mm Id)1
10***32Gasket1
18***09Plug As; (High Temperature)1
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209-6669 Cover Gp-Front Housing
12***81Seal-Integral; (Air Compressor Mounting)1
14***14Cover1
20***69Cover Group-Front Housing; (Air Compressor)1
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159-6159 Cover Gp-Front Housing
03***55Locknut; (5/16-18-Thd)(Marked X)2
15***59Cover Group-Front Housing1
16***71Seal1
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187-3316 Cover Gp-Valve Mechanism
15***41Cover Group-Valve Mechanism2
15***43Cover Group-Valve Mechanism1
18***16Cover Group-Valve Mechanism1
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345-9238 Cover Gp-Valve Mechanism
15***35Cover Group-Valve Mechanism2
18***26Cover Group-Valve Mechanism1
34***38Cover Group-Valve Mechanism1
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187-1326 Cover Gp-Valve Mechanism
14***78Grommet1
18***25Cover As-Valve1
18***26Cover Group-Valve Mechanism1
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159-9343 Cover Gp-Valve Mechanism
14***78Grommet1
15***43Cover Group-Valve Mechanism1
17***39Cover As-Valve; (Breather)1
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150-3141 Cover Gp-Valve Mechanism
14***76Cover-Valve Mechanism1
14***78Grommet1
15***41Cover Group-Valve Mechanism1
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150-3135 Cover Gp-Valve Mechanism
14***78Grommet1
15***57Cover-Valve Mech1
15***35Cover Group-Valve Mechanism1
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160-3913 Crankshaft Gp
15***32Crankshaft As1
16***13Crankshaft Group1
16***20Gear-Crankshaft; (80-Teeth)1
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160-3912 Crankshaft Gp
16***99Crankshaft As1
16***12Crankshaft Group1
16***20Gear-Crankshaft; (80-Teeth)1
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132-3212 Crankshaft Gp
12***82Bearing-Main; (0.51-mm Us)(.51mm U.S.)0
12***83Bearing-Main; (0.76-mm Us)(.76mm U.S.)0
12***84Bearing-Main; (0.51-mm Os)(.51mm O.S.)0
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234-9709 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)6
13***17Seal D-Ring6
13***81Liner-Cylinder Block6
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155-0741 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)6
13***17Seal D-Ring6
13***81Liner-Cylinder Block6
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267-4632 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)6
14***17Seal-O-Ring; (140.20mm Id)6
14***72Seal-Liner; (Coolant)6
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155-0056 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)6
14***17Seal-O-Ring; (140.20mm Id)6
14***72Seal-Liner; (Coolant)6
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200-2054 Cylinder Block As
11***66Cap; (Bearing)7
17***54Bolt-Hex Head; (M16x160mm)14
20***54Cylinder Block As1
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301-3016 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)6
13***17Seal D-Ring6
13***81Liner-Cylinder Block6
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267-4631 Cylinder Block As
16***81Cap-Crankshaft Bearing7
16***83Bolt; (7/8-14x7.5-In)14
26***31Cylinder Block As1
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204-3449 Cylinder Block As
10***60Seal; (Liner)6
16***63Shim-Liner; -Cylinder0
16***64Shim-Liner; -Cylinder0
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155-0057 Cylinder Block Gp
10***99Plug2
11***27Seal-O-Ring; (19.18mm Id)1
14***29Seal; (Drainback)1
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234-5998 Cylinder Block Gp
10***99Plug2
14***29Seal; (Drainback)1
1S***40Dowel; (30.23 mm X 9.37 mm)1
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234-5997 Cylinder Block Gp
11***20Seal-O-Ring; (Mid-Liner)6
14***17Seal-O-Ring; (140.20mm Id)6
14***72Seal-Liner; (Coolant)6
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234-9702 Cylinder Block Gp
10***99Plug2
14***29Seal; (Drainback)1
1S***40Dowel; (30.23 mm X 9.37 mm)1
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115-2983 Cylinder Block Gp
11***83Cylinder Block Group1
1N***99Plug-O-Ring; (Straight Thread)2
20***49Cylinder Block As1
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155-0740 Cylinder Block Gp
10***99Plug2
11***27Seal-O-Ring; (19.18mm Id)1
14***29Seal; (Drainback)1
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223-7263 Cylinder Head As
12***47Guide-Valve; (0.51-mm Os)(Standard)0
12***75Guide-Valve; (Standard)24
12***12Guide-Valve; (0.13-mm Os)(Standard)0
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243-6741 Cylinder Head As
12***47Guide-Valve; (0.51-mm Os)(Standard)0
12***75Guide-Valve; (Standard)24
12***12Guide-Valve; (0.13-mm Os)(Standard)0
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281-1640 Cylinder Head As
12***47Guide-Valve; (0.51-mm Os)(Standard)0
12***75Guide-Valve; (Standard)24
12***12Guide-Valve; (0.13-mm Os)(Standard)0
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179-9459 Cylinder Head As
11***02Sleeve; (Injector)6
13***06Insert-Valve Seat; (Inlet)(Standard)12
14***52Insert-Valve Seat; (0.508-mm Os Od)(0.508-mm Os Od)12
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243-0943 Cylinder Head As
15***82Insert-Valve Seat; (Exhaust)(Standard)12
16***42Insert-Valve Seat; (0.76-mm Os Od, Exhaust)(Standard)0
16***43Insert-Valve Seat; (0.76-mm Os Od, Inlet)0
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116-1085 Cylinder Head Gp
11***85Cylinder Head Group1
14***49Cylinder Head Group1
18***07Gasket As-Cylinder Head1
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191-8423 Cylinder Head Gp
12***54Bolt-12 Point Head; (3/4-16x8.5-In)10
12***55Bolt-12 Point Head; (3/4-16x7.638-In)16
18***96Cylinder Head Group1
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223-9250 Cylinder Head Gp
15***23Valve; (Inlet)12
15***24Valve; (Exhaust)12
16***78Seal-Valve Stem; (Exhaust)24
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234-9185 Cylinder Head Gp
10***73Fastener Group-Cylinder Head; (Marked X)10
12***54Bolt-12 Point Head; (3/4-16x8.5-In)1
12***55Bolt-12 Point Head; (3/4-16x7.638-In)1
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148-2149 Cylinder Head Gp
10***50Guide-Valve; (Standard)24
13***29Valve; (Exhaust)12
14***49Cylinder Head Group1
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263-5055 Cylinder Head Gp
15***24Valve; (Exhaust)12
16***78Seal-Valve Stem; (Exhaust)24
18***01Rotocoil Assem.24
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176-9918 Cylinder Head Gp
12***47Guide-Valve; (0.51-mm Os)(Standard)0
12***75Guide-Valve; (Standard)24
12***12Guide-Valve; (0.13-mm Os)(Standard)0
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183-5296 Cylinder Head Gp
15***24Valve; (Exhaust)12
16***78Seal-Valve Stem; (Exhaust)24
17***18Cylinder Head Group1
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193-2261 Damper & Pulley Gp
14***71Bolt; (5/8-18x9-In)6
16***26Damper Assem.1
19***61Damper & Pulley Group1
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192-8982 Damper & Pulley Gp
16***25Damper Assem.1
17***92Adapter1
19***82Damper & Pulley Group1
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6i-3638 Drive Gp-Pump
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)3
13***07Adapter Group-Pump Drive; -Remote1
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler4
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116-1083 Fastener Gp-Cylinder Head
11***83Fastener Group-Cylinder Head; (Cylinder Head)1
12***84Bolt; (Hex Head) (M16x2x160mm)26
2S***58Washer-Hard; (17x29x3-mm Thk)(Engine Brake)26
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204-5024 Fastener Gp-Front Housing
1F***58Nut-Full; (1/2-13-Thd)(Air Lines)2
20***48Stud-Taperlock2
20***24Fastener Group-Front Housing1
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112-2644 Fastener Gp-Front Housing
11***44Fastener Group-Front Housing1
14***67Stud-Taperlock, Plug,Female2
1F***58Nut-Full; (1/2-13-Thd)(Air Lines)2
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4p-6846 Fastener Gp-Front Housing
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
4P***46Fastener Group-Front Housing; -Remote1
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler2
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108-9382 Fastener Gp-Front Housing
10***82Fastener Group-Front Housing1
14***68Stud-Taperlock2
1F***58Nut-Full; (1/2-13-Thd)(Air Lines)2
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138-2539 Fastener Gp-Front Housing
13***39Fastener Group-Front Housing1
6V***49Nut-Hard; (M12 X 1.75)2
7D***49Washer (Flywheel Counter Balance Weight)2
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176-7007 Fastener Gp-Oil Pan
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case24
17***07Fastener Group-Oil Pan1
24***14Sleeve As24
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109-1657 Fastener Gp-Valve Mechanism
10***57Fastener Group-Valve Mechanism1
5J***94Screw,Cap,Socket He Manifold Mtg12
8L***13Strap-Cable(Tie 5.50" Long)6
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102-3596 Flywheel Gp
10***96Flywheel Group1
16***24Flywheel As1
4N***14Gear; (113-Teeth)(Flywheel Starter)1
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154-6189 Flywheel Gp
0S***76Bolt 5.08 cm(2 In.) Long12
13***76Flywheel As1
15***89Flywheel Group1
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204-9316 Gear Gp-Camshaft
10***26Dowel1
20***16Gear Group-Camshaft1
9X***72Bolt-Locking; (3/8-16x0.875-In)16
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208-9490 Gear Gp-Front
03***85Bolt-12 Point Hd-Engine Flywheel To6
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting1
10***68Bearing-Sleeve1
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117-2750 Gear Gp-Front
11***50Gear Group-Front1
13***83Shaft1
13***86Gear As; (Idler) (71 Teeth)1
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205-1230 Housing Gp-Flywheel
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***461
14***68Seal-Crankshaft; (Rear)(Flywheel Housing)1
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117-2775 Housing Gp-Flywheel
06***55Seal-O-Ring (Id=47.22mm)1
11***75Housing Group-Flywheel1
14***73Housing-Flywheel, Threaded Tie-Rod, Threaded Tie-Rod; Replaces 421694a11
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212-8137 Housing Gp-Front
06***55Seal-O-Ring (Id=47.22mm)1
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case1
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter11
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159-8621 Housing Gp-Front
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case1
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter11
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***822
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133-7075 Housing Gp-Front
11***24Gear; (Pump Drive) (34 Teeth)1
13***75Housing Group-Front1
16***66Seal Group-Crankshaft; (Front)1
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192-1563 Idler Gp-Belt -Alternator, Refrigerant Compressor
14***11Pulley As-Idler1
14***01Cover-Dust; (Rear)1
15***98Spacer; (10.4x38.1x20-mm Thk)1
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148-2063 Lifter Gp-Valve -Mechanism
0L***26Plug -13mm(.512 In.) Outside Dia.2
12***93Dowel1
14***63Lifter Group-Valve; -Mechanism1
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111-2088 Lifting Gp-Engine
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly8
10***85Eye-Lifting1
11***88Lifting Group-Engine; (Rear)1
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112-2418 Lifting Gp-Engine
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard4
10***86Eye-Lifting1
11***18Lifting Group-Engine1
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117-2748 Lifting Gp-Engine
11***05Plate; (Lifting Eye)2
11***48Lifting Group-Engine1
5P***45Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate)6
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148-7482 Mechanism Gp-Fuel Pump & Valve
14***82Mechanism Group-Fuel Pump & Valve1
19***98Rocker Arm Group3
6I***58Bridge-Valve12
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190-0009 Mechanism Gp-Fuel Pump & Valve
19***09Mechanism Group-Fuel Pump & Valve1
32***36Rocker Arm Group; -Non-Brake3
6I***58Bridge-Valve12
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243-3014 Mounting Gp-Belt Tensioner
15***00Bolt; (M10x1.5x54.25-mm)1
16***58Cover; (Dust)1
17***98Pulley As-Idler; (8-Groove)2
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197-7432 Mounting Gp-Belt Tensioner
14***01Cover-Dust; (Rear)1
15***00Bolt; (M10x1.5x54.25-mm)2
16***58Cover; (Dust)1
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197-7433 Mounting Gp-Belt Tensioner
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender4
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly3
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252-5557 Mounting Gp-Belt Tensioner
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case4
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***822
0S***08Bolt-Support To Starting Engine Timing Gear Housing2
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138-2550 Mounting Gp-Fan Drive
12***64Stud; (M12x1.75x86.3-mm Oal)2
13***50Mounting Group-Fan Drive; (Short)1
5R***37Washer; (Seal) (1.27mm Thk)2
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116-5408 Mounting Gp-Valve Mechanism
11***83Fastener Group-Cylinder Head; (Cylinder Head)1
11***08Mounting Group-Valve Mechanism1
17***68Bridge As-Valve; (Intake)12
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126-0144 Pan Gp-Oil -Engine
06***58Seal-O-Ring; (Oil Pan Drain Plug)2
10***08Gasket; (Oil Pan)1
12***57Bell As; (Suction)1
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196-2111 Pan Gp-Oil
06***58Seal-O-Ring; (Oil Pan Drain Plug)1
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold3
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
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250-1884 Pan Gp-Oil
06***58Seal-O-Ring; (Oil Pan Drain Plug)2
10***08Gasket; (Oil Pan)1
12***57Bell As; (Suction)1
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176-5745 Piston & Rod Gp
13***63Skirt-Piston1
13***61Ring-Piston; (Top)(Top)1
15***25Bolt; (7/16-14-2a-Thd)1
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130-0863 Piston & Rod Gp
11***99Plug-Pin2
11***16Rod Assem.1
11***72Bearing-Connecting Rod1
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134-3071 Piston & Rod Gp
13***71Piston & Rod Group1
13***05Ring-Piston; (Oil Control)1
14***30Ring-Piston; (Intermediate)1
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138-2028 Plug Gp-Cylinder Block
13***28Plug Group-Cylinder Block1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
6V***48Seal--O-Ring--To Governor Drive Housing1
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117-0165 Plug Gp-Cylinder Block
11***65Plug Group-Cylinder Block; -Oil Gallery, End1
3B***23Core Plug--Flywheel Housing Pinion Shaft Hole1
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117-0185 Plug Gp-Cylinder Block
11***85Plug Group-Cylinder Block; (Cylinder Block)1
6V***89Seal-O-Ring (Id=19.18mm)1
9S***06Plug (Front 5 Stem Main Control Valve)1
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234-9706 Plug Gp-Cylinder Block
23***06Plug Group-Cylinder Block; -Remote1
6V***48Seal--O-Ring--To Governor Drive Housing1
6V***09Seal-O-Ring (Id=16.36mm); (16.36-mm Id)1
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191-6520 Plug Gp-Cylinder Block
19***20Plug Group-Cylinder Block1
21***66Seal-O-Ring; (Engine Oil)1
30***30Accessory Drive Pulley, Plug As1
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235-1591 Plug Gp-Cylinder Block
03***53Seal-O-Ring; (08.92mm Id)1
13***27Seal-O-Ring; (19.18mm Id Base Side)1
18***09Plug As; (High Temperature)1
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305-9196 Plug Gp-Cylinder Block
30***96Plug Group-Cylinder Block1
6V***65O-Ring - For Oil Fill Plug1
9S***10Plug; (Straight Thread O-Ring)(Cylinder Head)1
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247-8211 Plug Gp-Cylinder Block
03***53Seal-O-Ring; (08.92mm Id)1
13***27Seal-O-Ring; (19.18mm Id Base Side)1
18***09Plug As; (High Temperature)1
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110-1116 Plug Gp-Cylinder Head
11***16Plug Group-Cylinder Head1
7W***92Plug-Pipe; (1/2-14 Nptf Thd)(Use Without Air Compressor)1
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234-9184 Plug Gp-Cylinder Head
18***08Plug As; (High Temperature)4
23***84Plug Group-Cylinder Head; -Remote1
6V***51Seal-O-Ring (Id=19.18mm)1
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234-9776 Plug Gp-Engine
23***76Plug Group-Engine; -Remote1
6V***09Seal-O-Ring (Id=16.36mm); (16.36-mm Id)1
9S***05Plug-O-Ring; (Straight Thread O-Ring)1
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234-9775 Plug Gp-Engine
23***75Plug Group-Engine; -Remote1
6V***09Seal-O-Ring (Id=16.36mm); (16.36-mm Id)1
8L***86Seal-O-Ring (Id=16.36mm); (16.36-mm Id)1
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328-4236 Rocker Arm Gp
30***22Shaft As-Rocker Arm, Exhaust Manifold1
32***96Rocker Arm Group; -Intake4
32***36Rocker Arm Group; -Non-Brake1
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320-2796 Rocker Arm Gp -Intake
25***21Button1
27***91Screw-Arm Adjustment; (3/8-24x1.20-In)1
27***17Nut; (3/8-24-Thd)1
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115-9397 Rocker Arm Gp
09***14Pin; (Spring)1
11***97Rocker Arm Group1
11***98Arm; (Valve Rocker) (Exhaust)2
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328-4238 Rocker Arm Gp
06***39Seal-O-Ring1
19***51Button; (24-mm Od)1
19***69Screw-Arm Adjustment; (9/16-18x2-In)1
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278-1931 Rocker Arm Gp
06***39Seal-O-Ring2
19***51Button; (24-mm Od)2
19***69Screw-Arm Adjustment; (9/16-18x2-In)2
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278-1929 Rocker Arm Gp
06***39Seal-O-Ring2
19***51Button; (24-mm Od)2
19***69Screw-Arm Adjustment; (9/16-18x2-In)2
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198-9898 Rocker Arm Gp
03***13Seal-O-Ring2
06***39Seal-O-Ring2
19***51Button; (24-mm Od)2
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319-7401 Seal Gp-Crankshaft -Front
14***67Seal Group-Crankshaft; (Front)1
31***01Seal Group-Crankshaft; -Front1
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116-1091 Seal Gp-Crankshaft
10***80Seal-O-Ring (Id=177.17mm)1
11***91Seal Group-Crankshaft; -Single Lip1
16***23Cover1
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193-7412 Support Gp-Engine
19***61Support As1
19***12Support Group-Engine1
5P***45Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate)8
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193-7413 Support Gp-Engine
19***65Support As1
19***13Support Group-Engine1
2H***88Bolt- 12 cm(4.75 In.) Long-Location "F"8
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117-2749 Valve Mechanism Gp -Engine
10***42Base-Valve Mechanism Cover1
10***67Pushrod; (Valve)12
10***68Pushrod-Injector6
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Cooling System
115-2990 Cooler Gp-Engine Oil
06***40Seal-O-Ring (Id=37.69mm)2
10***25Gasket1
11***90Cooler Group-Engine Oil; (Engine Oil)1
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117-2792 Fastener Gp-Oil Cooler -Engine
11***92Fastener Group-Oil Cooler; -Engine1
6V***17Bolt; (M8x1.25x30-mm)(Location Z)1
9M***74Washer-Hard; (8.8x16x2-mm Thk)(Hard)1
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163-1628 Fastener Gp-Oil Cooler -Engine
16***28Fastener Group-Oil Cooler; -Engine1
17***99Stud; (3/8-16-Thd)1
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler1
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109-2373 Fastener Gp-Water Pump
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
10***73Fastener Group-Water Pump; (Water Pump Cover)1
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116-5456 Housing & Regulator Gp -Engine Coolant Temperature
11***56Housing & Regulator Group; -Engine Coolant Temperature1
11***00Housing As-Regulator1
12***11Stud; (M8x1.25-Thd)(M8x1.25 Thd Both Ends)4
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116-5460 Lines Gp-Water -Bypass
10***08Flange1
10***95Tube1
11***60Lines Group-Water; -Bypass1
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116-5446 Lines Gp-Water -Water Pump Inlet Elbow
10***35Gasket1
11***46Lines Group-Water; -Water Pump Inlet Elbow1
11***57Elbow-Water Pump1
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117-2783 Lines Gp-Water -Single Thermostat
11***56Housing & Regulator Group; -Engine Coolant Temperature1
11***83Lines Group-Water; -Single Thermostat1
11***97Gasket4
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195-7999 Lines Gp-Water
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)5
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***823
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly6
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117-2789 Plug Gp-Water Lines
11***89Plug Group-Water Lines; -Engine Oil Cooler1
6V***27Seal-O-Ring (Id=8.92mm)1
8T***67Plug-Pipe; (Oil Cooler Bonnet Drain)1
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161-5719 Pump Gp-Water
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
10***30Bearing As-Roller1
12***17Seal Group; (Water Pump)1
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174-5986 Pump Gp-Water
10***77Seal-O-Ring; (100.97mm Id)1
12***72Seal-O-Ring (215.49mm Id)1
16***19Pump Group-Water1
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117-2674 Pump Gp-Water
11***74Pump Group-Water1
17***00Pump Group-Water1
6V***21Bolt; (M8x1.25x80-mm)2
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176-7000 Pump Gp-Water
10***10Gasket1
14***88Seal As; (Water Pump)1
17***95Cover-Pump1
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Electrical And Starting System
126-7631 Connection Gp-Electrical
12***31Connection Group-Electrical; (Cylinder Block Ground)1
12***49Stud; (3/8-16, 5/8-18x3.1-In)1
5P***47Washer (Bracket To Valve Support)1
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159-9107 Connection Gp-Electrical -Cylinder Head Ground
15***07Connection Group-Electrical; -Cylinder Head Ground1
17***99Stud; (3/8-16-Thd)1
6V***01Nut; (3/8-16-Thd)(Plate To Rh And Lh Bracket As)1
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124-2674 Connection Gp-Electrical
12***74Connection Group-Electrical; -Ground1
5C***61Nut (M8x1.25 Thd); (M8x1.25 Thd)1
6V***64Washer-Hard; (8.8x25.5x5-mm Thk)1
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168-4490 Control & Mtg Gp-Engine Elek
16***90Control & Mtg Group-Engine Elek1
16***94Spacer; (8.5x12.7x54.1-mm)2
21***49Control Group-Engine Electronic1
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191-5208 Control & Mtg Gp-Engine Elek
12***11Spacer; (3x15x17-mm Thk)1
15***96Support As1
15***98Support As1
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322-3603 Control Gp-Engine Electronic
18***72Screw-Pan Head; (No 8-32x9.52-mm)(Wax Coated)1
32***03Control Group-Engine Electronic1
7X***15Strap; (Grounding)1
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240-5304 Control Gp-Engine Electronic
18***72Screw-Pan Head; (No 8-32x9.52-mm)(Wax Coated)1
24***04Control Group-Engine Electronic1
7X***15Strap; (Grounding)1
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178-3091 Control Gp-Engine Electronic
17***91Control Group-Engine Electronic1
21***48Control Group-Engine Electronic1
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210-0849 Control Gp-Engine Electronic
21***49Control Group-Engine Electronic1
32***03Control Group-Engine Electronic1
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210-0848 Control Gp-Engine Electronic
18***72Screw-Pan Head; (No 8-32x9.52-mm)(Wax Coated)1
21***48Control Group-Engine Electronic1
7X***15Strap; (Grounding)1
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192-1623 Mounting Gp-Sensor
16***93Adapter1
19***23Mounting Group-Sensor1
1T***20Bolt-12 Point Head; (3/8-16x1.25-In)1
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235-4557 Sensor Gp-Engine
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
11***82Seal-O-Ring; (16.36mm Id)1
13***11Sensor Group-Temperature; (Transmission Lubrication Oil)3
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192-0883 Sensor Gp-Engine
00***17Elbow1
03***78Connector-Filtered Fuel To Adapter1
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
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194-6724 Sensor Gp-Pressure
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)1
19***26Harness As-Sensor; (16-18 Ga Wire)(Engine Oil Temperature)3
19***24Sensor Group-Pressure; -Air Inlet Manifold1
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197-8395 Sensor Gp-Pressure
19***24Sensor Group-Pressure; -Air Inlet Manifold1
19***95Sensor Group-Pressure; -Air Inlet Manifold1
6V***48Seal--O-Ring--To Governor Drive Housing1
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197-8393 Sensor Gp-Pressure
16***03Sensor Group-Pressure; (Turbocharger Inlet, Rh)1
19***93Sensor Group-Pressure; -Atmospheric1
21***68Seal-O-Ring; (11.89-mm Id)1
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197-8394 Sensor Gp-Pressure
16***05Sensor As-Pressure; (Unfiltered Engine Oil)1
19***94Sensor Group-Pressure; -Engine Oil1
6V***48Seal--O-Ring--To Governor Drive Housing1
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194-6725 Sensor Gp-Pressure
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)1
18***40Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga)3
19***25Sensor Group-Pressure; -Engine Oil1
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194-6722 Sensor Gp-Pressure
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)1
18***40Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga)3
19***22Sensor Group-Pressure; -Atmospheric Air1
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197-8397 Sensor Gp-Speed
18***01Sensor Group-Speed; (Camshaft Timing)1
19***97Sensor Group-Speed; -Timing, Camshaft1
20***40Seal-O-Ring; (13.94mm Id)1
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197-8396 Sensor Gp-Speed
18***11Sensor Group-Speed; (Crankshaft Timing)1
19***96Sensor Group-Speed; -Timing, Crankshaft1
20***40Seal-O-Ring; (13.94mm Id)1
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197-8391 Sensor Gp-Temperature
13***11Sensor Group-Temperature; (Transmission Lubrication Oil)1
13***45Pad; (Connector)1
19***91Sensor Group-Temperature; -Air Inlet Manifold1
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197-8392 Sensor Gp-Temperature
13***11Sensor Group-Temperature; (Transmission Lubrication Oil)1
13***45Pad; (Connector)0
19***92Sensor Group-Temperature; -Coolant, Water1
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191-6130 Wiring Gp-Electronic Control
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
0S***76Bolt 5.08 cm(2 In.) Long2
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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171-1103 Wiring Gp-Engine
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
13***89Clip; (Ladder)1
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226-2312 Wiring Gp-Engine
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
0S***76Bolt 5.08 cm(2 In.) Long2
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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117-2760 Wiring Gp-Unit Injector
11***60Wiring Group-Unit Injector1
2V***16Clip; (9.52mm Id)4
4P***37Harness Assembly-Wiring; (Unit Injector)1
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Engine Arrangement
235-4672 Engine Ar-Complete
10***36Cover Group-Cylinder Block; -Remote1
10***37Cover Group-Cylinder Block; -Remote1
10***12Fitting Group-Quick Disconnect; -Fuel1
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172-6945 Engine Ar-Complete
10***96Flywheel Group1
11***85Cover Group-Cylinder Block1
11***90Cooler Group-Engine Oil; (Engine Oil)1
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172-6957 Engine Ar-Complete
10***36Cover Group-Cylinder Block; -Remote1
10***37Cover Group-Cylinder Block; -Remote1
10***12Fitting Group-Quick Disconnect; -Fuel1
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172-6946 Engine Ar-Complete
10***96Flywheel Group1
11***85Cover Group-Cylinder Block1
11***90Cooler Group-Engine Oil; (Engine Oil)1
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172-6955 Engine Ar-Complete
10***36Cover Group-Cylinder Block; -Remote1
10***37Cover Group-Cylinder Block; -Remote1
10***12Fitting Group-Quick Disconnect; -Fuel1
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235-4673 Engine Ar-Complete
10***36Cover Group-Cylinder Block; -Remote1
10***37Cover Group-Cylinder Block; -Remote1
10***12Fitting Group-Quick Disconnect; -Fuel1
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235-3450 Engine Ar-Core
12***48Base Group-Valve Cover & Inj Harn1
12***10Injector Group-Fuel6
14***82Mechanism Group-Fuel Pump & Valve1
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235-3451 Engine Ar-Core
12***48Base Group-Valve Cover & Inj Harn1
12***10Injector Group-Fuel6
13***71Piston & Rod Group6
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185-6149 Engine Ar-Core
12***48Base Group-Valve Cover & Inj Harn1
12***10Injector Group-Fuel6
14***82Mechanism Group-Fuel Pump & Valve1
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185-6148 Engine Ar-Core
11***83Cylinder Block Group1
11***85Cylinder Head Group1
11***05Manifold Group-Inlet1
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185-6150 Engine Ar-Core
12***48Base Group-Valve Cover & Inj Harn1
12***10Injector Group-Fuel6
13***71Piston & Rod Group6
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185-6147 Engine Ar-Core
11***83Cylinder Block Group1
11***85Cylinder Head Group1
11***05Manifold Group-Inlet1
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Fuel System
116-5436 Filter Gp-Fuel
11***36Filter Group-Fuel; -Secondary1
1R***62Filter As-Fuel; (Advanced Efficiency)(Secondary)1
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213-5208 Fitting Gp-Fuel Lines
03***42Seal-O-Ring; (11.89mm Id)1
21***08Fitting Group-Fuel Lines1
2R***06Connector Valve Assembly To; Connector- Tube Assembly To Logic Valve1
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116-5434 Fitting Gp-Fuel Lines
11***34Fitting Group-Fuel Lines1
11***35Connector1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
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213-5207 Fitting Gp-Fuel Lines
21***07Fitting Group-Fuel Lines1
3K***60Seal Pilot Manifold On; Seal To Boom Check Valve Drain1
6V***98Seal-O-Ring -Line From Gear Pump Output1
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108-2312 Fitting Gp-Quick Disconnect
03***42Seal-O-Ring; (11.89mm Id)1
10***12Fitting Group-Quick Disconnect; -Fuel1
6V***52Cap-Dust; (Fuel Supply Tee Connection)1
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128-8510 Injector Gp-Fuel
10***72Spacer; (9.8x15.85x37.6-mm Thk)1
12***10Injector Group-Fuel1
21***25Injector Group-Fuel1
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203-7685 Injector Gp-Fuel
11***84Seal-O-Ring; (32.99mm Id)1
20***85Injector Group-Fuel1
21***98Seal-O-Ring; (34.56mm Id)1
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170-5252 Injector Gp-Fuel
11***84Seal-O-Ring; (32.99mm Id)1
17***52Injector Group-Fuel1
9X***17Seal-O-Ring; (9.6mm Id)1
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193-1561 Lines Gp-Fuel
03***47Elbow-Filtered Fuel From Based Assembly2
03***28Seal-O-Ring1
03***42Seal-O-Ring; (11.89mm Id)12
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216-7887 Lines Gp-Fuel
03***47Elbow-Filtered Fuel From Based Assembly2
11***02Hose As1
11***16Hose Assem.1
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189-0351 Pump Gp-Fuel Injection
15***01Bolt; (8x1.25x7-mm)(M8x1.25x70mm)1
18***51Pump Group-Fuel Injection1
20***85Injector Group-Fuel1
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116-5411 Pump Gp-Fuel Priming -Hand
11***11Pump Group-Fuel Priming; -Hand1
13***41Pump Group-Fuel Priming; (Hand)1
1P***36Gasket; (Fuel Priming Pump)(Fuel Priming Pump)1
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145-1695 Pump Gp-Fuel Transfer
09***70Washer-Sealing2
10***69Seal-O-Ring; (Fuel Transfer Pump)1
11***29Bolt-12 Point Head; (M10x1.5x25-mm)4
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139-9094 Pump Gp-Fuel Transfer
10***69Seal-O-Ring; (Fuel Transfer Pump)2
13***03Cover-Pump1
13***94Pump Group-Fuel Transfer; -Remote1
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139-9095 Pump Gp-Fuel Transfer
0S***73Stud2
10***72Cover; (Hydraulic Pump Drive)1
10***69Seal-O-Ring; (Fuel Transfer Pump)2
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281-2725 Valve Gp-Check -Fuel
03***33Seal-O-Ring; (12.42mm Id)1
28***25Valve Group-Check; -Fuel1
6V***23Ring; (Backup) (13.16mm Id)1
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156-5783 Valve Gp-Check -Fuel
03***33Seal-O-Ring; (12.42mm Id)1
15***83Valve Group-Check; -Fuel1
6V***23Ring; (Backup) (13.16mm Id)1
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233-6742 Valve Gp-Check -Fuel
23***42Valve Group-Check; -Fuel Filter1
28***25Valve Group-Check; -Fuel1
6V***89Seal-O-Ring (Id=19.18mm)1
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238-0296 Valve Gp-Check -Fuel
03***33Seal-O-Ring; (12.42mm Id)1
23***96Valve Group-Check; -Fuel Filter1
6V***23Ring; (Backup) (13.16mm Id)1
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Lubrication System
154-4327 Base Gp-Oil Filter -Engine
15***27Base Group-Oil Filter; -Engine1
17***63Base Group-Oil Filter; -Engine1
1P***67Plunger; (Engine Oil Cooler Relief Valve)2
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176-1363 Base Gp-Oil Filter -Engine
17***63Base Group-Oil Filter; -Engine1
2P***04Stud-Hollow; (1.5-16x1.339-In)1
9L***57Plug-Cup2
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166-1329 Base Gp-Oil Filter -Engine
11***45Valve-Pump Bypass; (Engine Oil Filter)1
16***28Base Assem.1
16***29Base Group-Oil Filter; -Engine1
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155-5005 Base Gp-Oil Filter
06***40Seal-O-Ring (Id=37.69mm)2
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
15***80Elbow1
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209-6302 Base Gp-Oil Filter -Engine
06***40Seal-O-Ring (Id=37.69mm)2
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
15***27Base Group-Oil Filter; -Engine1
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117-2786 Cover Gp-Oil Filter Base -Engine
11***86Cover Group-Oil Filter Base; -Engine1
5S***34Seal-O-Ring; (97.79mm Id)1
7C***42Cover; (Filter Base)1
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4n-2481 Fastener Gp-Oil Pump Mounting -Engine
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender2
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)1
4N***81Fastener Group-Oil Pump Mounting; Oil Pump Mounting Fastener Group1
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192-8992 Filler Gp-Engine Oil
10***69Seal-O-Ring; (Fuel Transfer Pump)1
19***92Filler Group-Engine Oil1
19***53Bracket1
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192-8993 Filler Gp-Engine Oil
06***55Seal-O-Ring (Id=47.22mm)1
19***93Filler Group-Engine Oil1
19***32Cap As; (Engine Oil Filler)1
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110-8876 Filler Gp-Engine Oil
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
10***99Tube As-Oil Filler; (Engine)1
11***76Filler Group-Engine Oil1
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226-2313 Filler Gp-Engine Oil -Left Front
06***55Seal-O-Ring (Id=47.22mm)1
19***32Cap As; (Engine Oil Filler)1
22***58Tube-Oil Filler1
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209-5777 Filter Gp-Engine Oil
0S***08Bolt-Support To Starting Engine Timing Gear Housing2
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***462
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case6
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154-4325 Filter Gp-Engine Oil
0S***08Bolt-Support To Starting Engine Timing Gear Housing2
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***462
12***72Stud-Mounting; (3/8-16x1.564-In)(3/8-16 Thd)2
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117-2751 Filter Gp-Engine Oil
11***51Filter Group-Engine Oil1
13***45Bolt-Hex Head; (M10x1.50x30)6
16***29Base Group-Oil Filter; -Engine1
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123-0783 Valve Gp-Fluid Sampling
12***83Fitting Group-Fuel Lines; -Fuel1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
6V***52Cap-Dust; (Fuel Supply Tee Connection)1
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212-8218 Fumes Disposal Gp
19***32Hose As-Fumes; (Disposal)1
19***49Bracket1
21***18Fumes Disposal Group1
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143-2656 Gauge Gp-Oil Level (Dipstick)
12***19Gauge As-Oil Level (Dipstick)1
14***54Tube As-Gauge Guide1
14***56Gauge Group-Oil Level (Dipstick); -Engine1
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217-4518 Guide Gp-Oil Level Gauge
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold1
11***68Seal-O-Ring; (15.54mm Id)1
16***70Plug3
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165-0592 Lines Gp-Turbocharger Oil
03***33Seal-O-Ring; (12.42mm Id)1
11***87Seal-O-Ring (23.16 mm Id)1
11***42Adapter1
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138-4773 Lines Gp-Turbocharger Oil
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
10***44Elbow1
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211-2820 Lines Gp-Turbocharger Oil
10***69Tube As; (Oil)1
11***87Seal-O-Ring (23.16 mm Id)1
11***42Adapter1
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209-7314 Lines Gp-Turbocharger Oil
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
10***44Elbow1
11***87Seal-O-Ring (23.16 mm Id)1
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235-2421 Lines Gp-Turbocharger Oil
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
10***44Elbow1
11***87Seal-O-Ring (23.16 mm Id)1
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117-2746 Pump Gp-Engine Oil
06***61Seal-O-Ring (Id=40.87mm)1
11***03Tube Assem.1
11***46Pump Group-Engine Oil1
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233-5220 Pump Gp-Engine Oil
23***20Pump Group-Engine Oil1
6D***46Seal-O-Ring (Id=101.27mm)1
6V***17Bolt; (M8x1.25x30-mm)(Location Z)4
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161-4113 Pump Gp-Engine Oil
12***56Cover As-Pump1
16***13Pump Group-Engine Oil1
1M***44Bolt; (3/8-16x2-1/4 In)2
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138-2535 Valve Gp-Fluid Sampling -Engine Oil
13***35Valve Group-Fluid Sampling; -Engine Oil1
3J***54Packing,Preformed Part Of Kit P/N 5r***271
5P***17Adapter- To Logic Valve 1u***591
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MT865 serial number reference

On MT865/MT865B/MT865C/MT865E the PIN plate is mounted on the tractor frame; factory documentation for the original MT865 places it on the left side of the frame, though plate side and exact position can differ by generation and region - verify placement against your own unit or dealer records rather than assuming a single location. Read the first block of letters (or the fixed alphanumeric block on post-2009 units) to identify the model and production run, then the trailing digits as the unique unit sequence - on the earliest 2002-2004 run the digit right after the letters also doubles as a year code. Always match the full plate PIN against dealer records rather than the prefix alone, since later and earlier generations can share the same lead characters.

PrefixIdentifies
BDSMT865 (2002-2004), original MT800 series
BDSMT865B (2005-2008), MT800B series
AGCC0865MT865C (2009-2013), MT800C series
AGCC0865MT865E (2014-2020), MT800E series, final generation

Frequently asked questions

What engine does the Caterpillar MT865 Challenger use?

It depends on the series. The base MT865 (2002-2004) runs a Caterpillar C16, 15.8 L (964 cu in) inline-six rated about 500 hp gross. The MT865B (2005-2008) and MT865C (2009-2013) both carry a Caterpillar C18, 18.1 L (1,105 cu in), rated about 510 hp and about 525 hp respectively, with the C-series confirmed on ACERT emissions technology; some references split early C18 builds by ACERT versus non-ACERT branding, so confirm the exact spec by serial number before ordering engine parts. The final MT865E (2014-2020) drops the Caterpillar engine entirely for an AGCO Power 16.8 L V12 rated about 540 hp. Always match engine and parts to the serial plate.

What is the operating weight of the Caterpillar MT865?

Operating weight runs from about 18.6 tonnes (41,000 lb) on the base 2002-2004 MT865 up to roughly 19.1-19.3 tonnes (42,200-42,600 lb) on the later B, C, and E series, and higher still when ballasted for heavy draft work. Weight varies by series, track width, and ballast configuration, so treat any single figure as an approximation and confirm against your specific unit.

What replaced the Caterpillar MT865?

Within its own line, the MT865E (2014-2020) was the last generation to carry the bare MT865 designation, and it also marked the end of the Caterpillar engine in this tractor, replaced by an AGCO Power V12. Caterpillar itself has no separate successor, since AGCO owns the Challenger agricultural tractor business outright, having acquired it from Caterpillar in 2002. AGCO continued the large-frame Challenger rubber-track tractor line afterward, but no later model carried the plain MT865 name forward.

What MT865 owners discuss

What's the most talked-about wear item on the MT865 driveline, and how do I catch it early?
The reaction-arm (walking-beam) bearing at the final drive is the wear point owners watch closest, especially on early-build units before the inspection and lubrication plug layout was updated. Change the reaction-arm oil on a routine interval; most owners hold to roughly every 250-500 hours and don't stretch it. Pull the magnetic drain plug at every change: a light film of fine metal is normal, but coarse chunks or heavy fuzz mean the bearing is on its way out. Caught early with the housing intact, it's a bearing-only repair; let it go to failure and the job balloons into a multi-day teardown at real cost. Have your dealer verify bearing condition before it fails outright if you find metal in the plug.
My MT865C keeps dropping to neutral or hesitating on shifts — is the transmission failing?
Not usually. Owners chasing this exact symptom on the C-series found no clutch slip or hydraulic irregularity in the transmission itself. The cause traced back to the wiring harness routed under the swivel armrest: pins and connectors get pulled or chafed every time the seat swivels, and the armrest control module drops out momentarily, which reads to the operator like a shift fault. Check that harness and its connectors before condemning the transmission.
What kind of undercarriage and track wear should I plan for?
Life varies with soil type, ballast weight, and how much rock or abrasive ground the machine sees, so treat any single number as a rough guide, not a guarantee. One operator running a small fleet of these reported getting roughly 1,500 hours out of a set of tracks and bogie wheels before replacement was worth it. Keep track tension in spec: over-tight tears the belt, too loose lets the drive wheel slip, and combined with worn or torn guide lugs that can roll a belt off the undercarriage entirely under heavy load. Check guide-lug engagement at the drive wheel and idler at every service interval. Have your dealer verify tension and lug wear before running at road speed if you're not sure.
How do the engines really differ across MT865, MT865B, MT865C, and MT865E, and are there quirks to know per series?
The base MT865 (2002-2004) runs the Cat C16. The MT865B (2005-2008) and MT865C (2009-2013) both carry the Cat C18 ACERT, with the C-series adding hydraulic, cab, and electronics updates plus a modest power bump over the B. Some parts references separate early C18 builds by ACERT versus non-ACERT branding, so confirm the exact engine spec by serial number before ordering engine parts. Owners who ran the C18 in heavy earthmoving-style draft work, as opposed to normal ag pulling, report more cylinder liner wear and higher fuel burn than the C16; under typical ag duty most report it holds up fine. The MT865E (2014-2020) drops Caterpillar power entirely for an AGCO Power V12. It meets Tier 4 Final emissions through SCR/DEF dosing and cooled EGR without a diesel particulate filter, so there's no forced regen cycle to manage, though expect DEF use in the high single-digit percent of diesel consumption.
What electrical or sensor issues come up most in owner discussions?
Intermittent CAN-network faults — dash warnings, false codes, a module appearing to drop off the network — are reported and usually trace back to a chafed connector or weak ground near the cab and armrest wiring rather than a bad module or ECM; check grounds and connectors before swapping electronics. Monitor/display and hour-meter dropouts are also reported on B and C-series cabs. A less common but confusing complaint is a no-crank, no-start with good batteries and fuses and power showing at the cab and starters. Work the starting circuit in order — battery disconnect switch, main relay, starter solenoid, ignition switch — before condemning the starter itself. Have your dealer verify before bypassing any park or neutral safety interlock; skipping that step risks unexpected machine movement.
What should I check when buying a used MT865, whatever the generation?
First confirm the exact generation and engine by serial number — Cat C16, Cat C18 non-ACERT or ACERT, or AGCO Power V12 — since parts sourcing and dealer support differ once you're past the Caterpillar-engine generations. Pull an oil sample and check the reaction-arm bearing's magnetic drain plug for metal. Walk the tracks and bogie wheels for wear and ask about tensioning and belt-roll-off history. Cycle every armrest and console function and check for stored CAN or fault codes rather than trusting a clear dash at idle. Confirm the starting circuit cranks cleanly with the cab cold. Ask whether the tractor spent its life in normal ag draft work or heavier earthmoving-style pulling, especially on C18 units, since that affects engine wear. Match the hydraulic coupler style to your implements before you buy hoses.
Any notable hydraulic quirks or things to confirm before hooking up implements?
The C-series picked up higher-flow couplers and improved case-drain plumbing over the B, using either Pioneer-style or flat-face fittings depending on the unit, so confirm which coupler style is fitted before ordering hoses or adapters. Overall the hydraulics get consistently good marks from owners for being smooth and responsive; the main long-term wear point in that circuit is the reaction-arm bearing lubrication system, not the pump or valves themselves.

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

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