Product Introduction
This comprehensive collection features OEM-equivalent replacement parts for the Detroit 8V-71 V8 two-stroke diesel engine, covering all critical engine subsystems: valve train components (rocker arms, camshafts, valves), rotating assemblies (crankshafts, pistons, connecting rods), bearing sets (standard and undersized), fuel system parts (injectors, fuel pumps, lines), sealing kits, gaskets, fasteners, and auxiliary components (blowers, water pumps, oil coolers). All parts are designed for direct, modification-free installation into the Detroit 8V-71 engine, ensuring flawless compatibility with left/right bank components and perfect alignment with original engine housings.
Functional Description
- Valve Train Operation: Rocker arm assemblies, camshafts, and exhaust valves regulate intake/exhaust flow, maintaining precise valve timing for optimal combustion and engine horsepower output
- Power Generation & Transfer: Forged crankshafts, piston assemblies, and connecting rods convert combustion energy into rotational power, supporting the engine’s rated torque capacity under heavy loads
- Fuel System Precision: N-65 injectors, fuel pumps, and injector tubes deliver metered diesel fuel, ensuring efficient combustion, reduced fuel consumption, and consistent engine performance
- Lubrication & Cooling: Oil coolers, water pumps, and sealing components maintain proper engine temperature and lubrication, preventing overheating and premature wear of rotating parts
- Sealing & Leak Prevention: Engine gaskets, oil seals, and O-rings create leak-proof joints at critical interfaces, stopping oil/fuel leaks and preserving lubrication/cooling system integrity
- Structural Support & Fastening: High-strength bolts, lock nuts, and retainers secure engine components, withstanding vibration and thermal expansion during continuous operation
Structural Features
- Premium Metallurgy: Pistons, crankshafts, and connecting rods use forged alloy steel for high tensile strength; bearings feature tri-metal construction for load capacity and wear resistance
- Precision Machining: Camshafts, rocker arms, and injector components have micron-level dimensional accuracy, ensuring tight clearances (0.001–0.003 inch typical tolerance) and perfect alignment
- Heat & Wear Resistance: Exhaust valves and valve inserts use heat-treated stainless steel; piston rings and seals employ friction-resistant materials to withstand high-temperature combustion
- OEM-Matched Design: All parts follow Detroit 8V-71 factory dimensions, bolt patterns, and interface specs, enabling drop-in replacement without custom machining
Applicable Operating Conditions
These Detroit 8V-71 engine parts are engineered for reliable performance across heavy-duty industrial and mobile equipment scenarios, with these key parameters:
- Engine Compatibility: Detroit 8V-71 two-stroke V8 diesel engine (all industrial, marine, and drilling rig configurations)
- Operating Temperature: Engine bay temperatures up to 220°F (104°C) continuous duty
- Application Settings: Drilling rig power units, industrial generators, marine vessels, construction machinery, stationary pump systems, and heavy-duty trucks
- Fuel Compatibility: Standard diesel fuel, low-sulfur diesel, and engine-specific lubricating oils
Preventive Maintenance Recommendations
- Scheduled Inspection Intervals: Inspect injectors, valve clearances, and gaskets every 500 operating hours; check bearing wear, piston rings, and camshaft condition every 1,500 hours
- Recommended Replacement Cycles: Replace fuel filters, injector filters, and seals every 3,000 hours; swap bearings, piston rings, and gaskets every 8,000 hours; overhaul valve train components every 12,000 hours
- Lubrication Protocols: Use Detroit Diesel-approved engine oil, change oil and filters every 250 hours, and lubricate rocker arms and gear assemblies to reduce friction and corrosion
- Troubleshooting Best Practices: Diagnose power loss by inspecting injectors and piston rings; fix oil leaks by replacing worn seals and gaskets; resolve valve noise by adjusting clearances and replacing worn rocker arms
- Inventory Management: Stock high-wear consumables (gaskets, seals, filters) and critical rotating parts (bearings, injectors) on-site to minimize emergency repair delays
We supply the following spare parts:
| NO | MATERIAL | |
| 1 | ARM ASSY, EXH VLV ROCKER( L), GM, 5111340 | PCS |
| 2 | ARM ASSY, EXH VLV ROCKER( R), GM, 5111343 | PCS |
| 3 | ARM ASSY,INJECTOR ROCKER, GM, P/N 5179954 | PCS |
| 4 | BEARING CAMSHAFT STD, GM 01.7040. 5196022 | PCS |
| 5 | BEARING CLUTCH PILOT, 8VF-108017, 907594 | PCS |
| 6 | BEARING, ASSY, IDLER GEAR, GM 7451142 | PCS |
| 7 | BEARING, ASSY, ROLLER, GM 7451948 | PCS |
| 8 | BEARING, CAM & BALC, SHAFT, GM 01. 7010, 5111422 | PCS |
| 9 | BEARING, FAN SHAFT ( FRONT ) ( ND 55694L 1C ) ( 5.4332 ) PN 908002 | PCS |
| 10 | BEARING, FAN SHAFT ( REAR ) ( ND Z97509LR1B ) PN 907278 | PCS |
| 11 | BEARING,CAMSHAFT FRONT GM 01.7010 5117984 | PCS |
| 12 | BLOWER ASSY,P/N.5103495 | PCS |
| 13 | BOLT 5/16″ – 18 X 1 1/2″ PN 180083 | PCS |
| 14 | BOLT 5/16″ – 18 X 5 1/2″ PN 455971 | PCS |
| 15 | BOLT 5/16″ – 18 X 5 1/4″ PN 272545 | PCS |
| 16 | BOLT FLYWHEEL GM 9412016 | PCS |
| 17 | BOLT HEX HEAD, 1/2″ – 13 X 1″ GM 186689 | PCS |
| 18 | BOLT ROCKER PN 5150325 | PCS |
| 19 | BOLT, 9/16″-18 X 2-1/2″ LOCK,GM, 9412015 | PCS |
| 20 | BOLT, 9/16″-18 X 2-1/4″ LOCK,GM, 9410925 | PCS |
| 21 | BOLT, HEX HEAD, 1/2″-13 X 1″, GM, 186689 | PCS |
| 22 | BOLT,INJECTOR, GM 8V-71,PN 51179847 | PCS |
| 23 | BRACKET,SHAFT, GM 5150324 | PCS |
| 24 | BRIDGE PN 5111337 | PCS |
| 25 | CAM AIR SHUTDOWN ( AIR CLEANER ) GM 5122623 | PCS |
| 26 | CAM,FOLLOWER,W/ROLLER,GM 01.8260 5115087 | PCS |
| 27 | CAMSHAFT ASSY ( LEFT BANK ) STAMPED PN 5117871 TYPE : 8V-71 | PCS |
| 28 | CAMSHAFT ASSY ( RIGH BANK ) STAMPED PN 5117872 TYPE : 8V-71 | PCS |
| 29 | CLAMP HOUSE 1″ 5104592 | PCS |
| 30 | CLAMP INJECTOR, LOW CRAB PN 5121259 | PCS |
| 31 | CLAMP PN ( 6″ I. D ) PN 5114937 | PCS |
| 32 | CLAMP PN ( 512784 ) | PCS |
| 33 | CORE ASSY, OIL COOLER, GM PN 8529663 | PCS |
| 34 | COVER CYLINDER PN 5164062 | PCS |
| 35 | CAP MAIN BEARING GM PN 5117502 ENGINE TYPE : 8V – 71 | PCS |
| 36 | ELBOW, 5/16″ INV. TUBE 900, GM 143343 INDUSTRIAL ENGINE SERIES | PCS |
| 37 | ELEMENT FILTER INJECTOR, GM PN 5228587 | PCS |
| 38 | GASKET OIL COOLER ( REAR & FRONT ) PN 5117404 | PCS |
| 39 | GASKET CYLINDER HEAD, GM PN 5183305 | PCS |
| 40 | GASKET EXHAUS MANIFOLD GM PN 5150195 | PCS |
| 41 | GASKET, CVR CYL HD TYPE T, GM 5104019 | PCS |
| 42 | GUIDE, CAM FOLLOWER, GM, P/N 5150298 | PCS |
| 43 | GUIDE,VALVE, EXHAUST, GM 01.8320.5129919 | PCS |
| 44 | HUB, ACCESSORY DRIVE GEAR, GM 5123082 | PCS |
| 45 | INJECTOR ASSY, N-65, GM 02.1001.5228900 | PCS |
| 46 | TUBE INJECTOR HOLE GM, PN 02.1290.5199527 | PCS |
| 47 | INSERT, VALVE EXHAUST GM 01. 8330. 5101101 | PCS |
| 48 | INSERT,CYL. LINER, GM 01.6187 5184484 | PCS |
| 49 | KIT ,CYLINDER , GM 01.61825149262 NO. 1 (7 EA) NO. 2 (1 EA) | PCS |
| 50 | LINER,CYLINDER,PN.23502023 | PCS |
| 51 | KIT, GASKET, O/H ENGINE 8V71 GM 23512680 | PCS |
| 52 | WATER PUMP ASSY FRESH,PN.23506790 | PCS |
| 53 | THRUST WASHER ( .010″ O.S ),P/N.5196754 | PCS |
| 54 | THRUST WASHER,STD.P/N.5117005 | PCS |
| 55 | LINK INJECTOR TUBE TO GOV GM. PN 5117191 | PCS |
| 56 | LOCK, SPRING,VALVE, EXHAUST, GM 5111337 | PCS |
| 57 | NUT,LOCK, PUSH ROD, GM, P/N 5151601 | PCS |
| 58 | OIL COOLER , GM 8V71, PN 8547237 | PCS |
| 59 | PIPE ASSY, FUEL SHORT, 3.4.6. CYL GM 5111526 | PCS |
| 60 | PIPE ASSY,FUEL,LONG 3.4.6.CYL, GM 5111527 | PCS |
| 61 | PIPE PRESSURE BLOCK GM 4.8001. 5124767 | PCS |
| 62 | PLATE PLYWHEEL PN 6750517 | PCS |
| 63 | PUMP ASSY FRESH WATER RH GM 8V-71 PN 5130960 | PCS |
| 64 | PUMP STEERING, IDECO 308, IP0406 | PCS |
| 65 | RETAINER, GEAR IDLER, GM 5176998 | PCS |
| 66 | RETAINER, P. ROD SNAP RING, GM,PN 5150303 | PCS |
| 67 | RETAINER, PIN PISTON, GM, PN 5188405 | PCS |
| 68 | RETAINER,GEAR,IDLER , GM 5176998 | PCS |
| 69 | RING (SET), PISTON,STD, GM, PN 5193477/5199805 | PCS |
| 70 | RING,CAMSHAFT, GM 5115572 | PCS |
| 71 | ROD ASSY , CONNECT, GM 01. 60015135756 | PCS |
| 72 | SEAL ( OPTIONAL – 4 VALVE ) GM PN 5129920 | PCS |
| 73 | SEAL (DOUBLE LIP STD), 8VF-92 PN 5106329 | PCS |
| 74 | SEAL OIL CRANSHAFT, REAR, GM5127821 | PCS |
| 75 | SEAL,OIL,CAM & BALANCE SHAFT FRONT,P/N.23516871 | PCS |
| 76 | SEAL,OIL,CRANKSHAFT,FRONT,R.H.P/N.23514608 | PCS |
| 77 | SEAL,OIL,CRANKSHAFT,FRONT L.H. P/N.23514609 | PCS |
| 78 | FUEL PUMP LH, PN. 5199560 | PCS |
| 79 | SPACER,CAMSHAFT GEAR,P/N.5116485 | PCS |
| 80 | RETAINER,CAMSHAFT GEAR NUT,P/N.5172734 | PCS |
| 81 | SEAL,OIL,CAMSHAFT , GM 5116476 | PCS |
| 82 | SEAL,OIL,CRANKSHAFT,FRT, GM, P/N 5115454 | PCS |
| 83 | SEAT, PUSH ROD SPRING ,LOWER, GM 5123250 | PCS |
| 84 | SEAT, SPRING, PUSH ROD,UPR, GM, PN 5150302 | PCS |
| 85 | SHAFT ( 7″ L ) ( 625″ DIA ). ( 8V ) PN 5130295 | PCS |
| 86 | SHAFT ASSY, ROCKER ARM, GM 5150322 | PCS |
| 87 | SHAFT, BLOWER DRIVE, GM 8V-71,PN 5117725 | PCS |
| 88 | SHELL SET,CON.ROD BEARING (.020″US).P/N.5196348 | PCS |
| 89 | SHELL SET,CON.ROD BEARING (.030″US).P/N.5196351 | PCS |
| 90 | SHELL SET CRANSHAFT MAIN BEARING (. 020″ US ) PN 5196336 | PCS |
| 91 | MAIN BEARING (.030″ US ) P/N.5196339 | PCS |
| 92 | SPRING EXHAUST VLV ( 4 VLV ) HD PN 5117561 | PCS |
| 93 | STARTER ASSY, HYDR, GM 5125121 | PCS |
| 94 | STRAINER ASSY FUEL, GM PN 5575568 | PCS |
| 95 | SUPPORT ASSY, ACCESORY DRIBVE, GM 5117723 / 8923063 | PCS |
| 96 | VALVE EXHAUST, GM 01. 8310. 5195167 | PCS |
| 97 | WASHER ( .010″ O.S ) | PCS |
| 98 | WASHER 1-1/16″ X 1-3/4″, 8VF- 92,5160380 | PCS |
| 99 | WASHER, INJEC, CLAMP DOWN, GM 5150250 | PCS |
| 100 | WASHER, THRUST, GM 01.3100.5117005 | PCS |
| 101 | CAP MAIN BEARING GM PN 5117502 ENGINE TYPE : 8V – 71 | PCS |
| 102 | PISTON ASSY 8V71 GM PN 5198839 | PCS |
| 103 | CRANKSHAFT,ASSY,PN.5103281,DETROIT | PCS |
Field Fault Repair Cases
Case 1: Detroit 8V-71 Exhaust Valve Wear Causing Power Loss
A drilling rig’s Detroit 8V-71 engine experienced a 20% drop in horsepower and rough idling, traced to worn exhaust valves (PN 5195167) and damaged valve springs. The worn valves disrupted combustion and reduced engine efficiency. Replacing all exhaust valves, valve springs, and valve locks restored full power output and smooth engine operation, with the rig back online in 3 hours.
Case 2: Main Bearing Degradation Leading to Engine Vibration
A stationary Detroit 8V-71 generator developed severe crankshaft vibration and abnormal noise, caused by worn standard main bearings (PN 5196022) and damaged thrust washers. The bearing wear caused shaft misalignment and overheating. Installing new OEM main bearings and thrust washers, plus realigning the crankshaft, eliminated vibration and prevented catastrophic engine failure.
Case 3: Fuel Injector Failure Causing Poor Combustion
An 8V-71 engine exhibited excessive smoke, high fuel consumption, and misfiring, due to clogged and worn N-65 injectors (PN 5228900). The faulty injectors delivered uneven fuel flow, ruining combustion efficiency. Replacing all injectors, injector tubes, and fuel filters restored proper fuel metering, reducing smoke and returning fuel efficiency to factory levels.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible with all Detroit 8V-71 engine configurations? | Yes, these spare parts fit all industrial, marine, drilling rig, and generator versions of the Detroit 8V-71 V8 two-stroke diesel engine, with left/right bank specific components clearly labeled. |
| Do you offer standard and undersized bearings for the 8V-71 engine? | Yes, we stock standard main/rod bearings and undersized options (0.010”, 0.020”, 0.030” US) for worn crankshafts, allowing engine rebuilding without crankshaft machining. |
| Is the full engine gasket kit included in this parts list? | Yes, the comprehensive overhaul gasket kit (PN 23512680) is included, covering all cylinder head, oil cooler, and manifold gaskets needed for a complete 8V-71 engine rebuild. |
Procurement Guidance & Closing Call to Action
For operators relying on the Detroit 8V-71 diesel engine for critical power and propulsion, these OEM-equivalent replacement parts are the definitive procurement choice to protect engine reliability, minimize costly downtime, and extend service life. Backed by strict quality testing and alignment with Detroit Diesel factory standards, each component eliminates the risks of subpar aftermarket parts, ensures consistent engine performance, and reduces long-term maintenance expenses.
Use this catalog as your trusted single-source reference for accurate part selection, whether stocking routine maintenance inventory, replacing worn components, or completing a full engine overhaul. By choosing these precision-engineered Detroit 8V-71 engine parts, you secure durable, performance-matched components that align with OEM specifications, safeguard your engine investment, and keep your equipment running smoothly. Secure the exact Detroit 8V-71 spare parts your power unit needs to maintain uninterrupted operation and uphold strict performance and reliability standards.
