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The Detroit Diesel 2-71 is a compact, inline 2-cylinder, two-stroke engine from the legendary 71 Series. Known for its mechanical simplicity, rugged design, and long service life, it remains a trusted engine in marine, industrial, and generator applications around the world. Diesel Pro Power offers a complete selection of aftermarket replacement parts for the 2-71 engine. All parts are engineered to meet or exceed OEM specifications, and we offer worldwide shipping within 24 hours. Engine Type: Inline 2-Cylinder Displacement: 142 cubic inches (2.3L) Cycle: Two-Stroke Diesel Bore x Stroke: 4.25" x 5" Aspiration: Naturally Aspirated Cooling System: Water-Cooled Applications: Marine auxiliaries, light industrial equipment, generators, compressors Aftermarket cylinder kits including piston, rings, and liner Wrist pins, retainers, and seals included Designed for long service life and proper compression Oil pressure, water temperature, RPM, and voltage gauges Available in mechanical or electrical formats Marine-grade and panel-mount configurations Circulation water pumps for engine cooling Includes gasket and pulley if applicable Durable cast housing and impeller Raw water pumps for marine cooling circuits Bronze impeller designs for corrosion resistance Available as complete units or rebuild kits Remanufactured and aftermarket head assemblies Includes valves, guides, seats, and springs Direct bolt-on replacement Mechanical fuel transfer pumps Mounting gaskets and flanges included Aftermarket units built to match OEM fuel flow and pressure Factory-calibrated unit injectors Includes O-rings, clamps, and fuel return fittings Fully compatible with stock timing and fuel pressure Roots-style scavenging blower Remanufactured or new aftermarket assemblies Includes rotors, shafts, bearings, and seals Critical for correct air-fuel scavenging in 2-stroke operation Gear-driven oil pumps Delivers consistent oil pressure across RPM range Includes relief valve and gasket Remanufactured crankshafts Precision balanced and magnaflux-tested Includes thrust washers, keyways, and seal surfaces Aftermarket forged connecting rods Bushings and rod bolts available Sized for direct compatibility with factory crank and piston OEM-profile aftermarket camshafts Designed to match factory valve timing and injector lift Includes followers, bushings, and thrust plates Elbows, outlet adapters, and flange kits High-heat gaskets and clamps available Full engine gasket kits (upper and lower) Head gaskets, intake, oil pan, valve cover, blower, and manifold seals Heat- and oil-resistant materials Starter solenoids, ignition switches, oil pressure switches Waterproof and marine-grade options available Service manuals, parts manuals, and troubleshooting guides Specialty tools for injector timing, blower removal, and valve adjustment Marine alternators with external or internal regulation Mounting brackets and wiring accessories Coolant, fuel, and oil hoses Stainless steel marine clamps High-temp silicone and reinforced rubber options Spin-on and cartridge-style filters Filter bases and mounting brackets Replacement elements with OEM filtration performance Spin-on oil filter kits Filter heads, bases, and adapters High-capacity elements for extended service intervals Marine-grade control cable for throttle and shift Stainless steel core for corrosion resistance Compatible with standard lever systems Designed for rugged throttle or clutch actuation Low-friction jacket for smooth travel Control cables for generator sets, compressors, and stationary engines Multiple lengths and connection types available OEM-color engine enamel paint Heat-resistant gasket and thread sealants Spray and brush-on options PTO clutches and drive adapters Hydraulic pump mounts and accessory plates Shafts, seals, and housings 40,000+ satisfied customers worldwide All parts are aftermarket, engineered to OEM specs Fast global shipping within 24 hours Expert support to help you find the right part the first time User-friendly catalog to quickly navigate to the part you need Detroit Diesel 2-71 Torque Specifications Marine Detroit Diesel 2-71 Component Maintenance Life Engine Components and Their Roles (Covering Detroit Diesel 271, 371, 471, 671 Engines) Key Maintenance Procedures (Covering Detroit Diesel 271, 371, 471, 671 Engines) Assembly and Disassembly Guidelines (Covering Detroit Diesel 271, 371, 471, 671 Engines) Safety Protocols for Technicians (Working On Detroit Diesel 271, 371, 471, 671 Engines) Torque Specifications And Wear Limits (Covering Detroit Diesel 271, 371, 471, 671 Engines) Disassembly Of Throttle Controls For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671) DISASSEMBLY OF AIR BOX COVERS FOR DETROIT DIESEL 71 SERIES INLINE ENGINES (271, 371, 471, 671) Disassembly Of The Blower For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671) Removing Air Box Drains For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) REMOVING THE VALVE ROCKER COVER ON A DETROIT DIESEL 71 SERIES INLINE ENGINE (271, 371, 471, 671) Torque Specifications Of 71 Series Inline Engines (271, 371, 471, 671) Disassembly Of Components For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Key Components of the Oil Pump and Model-Specific Variations (271, 371, 471, 671) INSIGHTS FROM THE DETROIT DIESEL 71 SERIES INLINE ENGINE MANUAL VOLUME 2 (271, 371, 471, 671) LUBRICATION SYSTEM FOR DETROIT DIESEL 71 SERIES INLINE ENGINES (271, 371, 471, 671) Disassembly of the Oil Pump For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Reassembly of the Oil Pump For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Oil Filters For Detroit Diesel 71 Series Inline Engines (271,371, 471, 671) LUBRICATING OIL PRESSURE REGULATOR FOR DETROIT DIESEL 71 SERIES INLINE ENGINES (271, 371, 471, 671) Oil Cooler For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Oil Pan For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Ventilating System for Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Oil Pump Maintenance For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Radiator Cooling For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Cooling System and Heat Exchanger For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Cooling System Configurations For 71 Series Inline Engines (271, 371, 471, 671) Types of Coolant for Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Chemicals & Coolant For Your Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671) Maintaining The Heat Exchanger Core For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671) Guidelines for Coolant For Detroit 71 Series Inline Engines (271, 371, 471, 671) Introduction to the Water Pump System for the 71 Series Inline Engine (271, 371, 471, 671) Disassembly of the Freshwater Pump For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Reassembly of the Freshwater Pump For Detroit Diesel 71 Series Inline (271, 371, 471, 671) Freshwater Pump Maintenance For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Raw Water Pump Maintenance (Marine Application) For 71 Series Inline Engines (271, 371, 471, 671) Disassembly of the Raw Water Pump For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Reassembly of the Raw Water Pump For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Water Pump For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Thermostat Operation For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) SYSTEMATIC APPROACH TO TROUBLESHOOTING DETROIT DIESEL 71 SERIES INLINE ENGINES (271, 371, 471, 671) Cooling System Troubleshooting For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671) Troubleshooting Tips for Improved Efficiency In Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Parts for Detroit Diesel 271
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Premium Aftermarket Parts for Detroit Diesel 2-71 Engines
Detroit Diesel 2-71 Engine Specifications
Full Parts Catalog for Detroit Diesel 2-71
Cylinder Kit – Detroit Diesel 2-71
Gauges – Detroit Diesel 2-71
Engine Water Pump – Detroit Diesel 2-71
Marine Water Pump – Detroit Diesel 2-71
Cylinder Head – Detroit Diesel 2-71
Fuel Pump – Detroit Diesel 2-71
Injector – Detroit Diesel 2-71
Blower – Detroit Diesel 2-71
Oil Pump – Detroit Diesel 2-71
Crankshaft – Detroit Diesel 2-71
Connecting Rod – Detroit Diesel 2-71
Camshaft – Detroit Diesel 2-71
Exhaust – Detroit Diesel 2-71
Gasket – Detroit Diesel 2-71
Switch & Solenoid – Detroit Diesel 2-71
Manuals & Tools – Detroit Diesel 2-71
Starter & Alternator – Detroit Diesel 2-71
Hose, Clamp – Detroit Diesel 2-71
Fuel Filter – Detroit Diesel 2-71
Oil Filter – Detroit Diesel 2-71
33C Marine Cable (3/16") – Detroit Diesel 2-71
43C Marine Cable (1/4") – Detroit Diesel 2-71
Industrial Cable – Detroit Diesel 2-71
Paint & Sealant – Detroit Diesel 2-71
Power Take-Off (PTO) – Detroit Diesel 2-71
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Additional ResourcesÂ
Practical Guide To Servicing Your Detroit Diesel 71 Series Inline (271, 371, 471, & 671 ) – Part 1
AIR SCAVENGING AND BLOWER SYSTEM FOR DETROIT DIESEL 71 SERIES INLINE ENGINES (271, 371, 471, 671)
Best Practices for Keeping Air Intake and Exhaust Systems Clean For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Cleaning and Inspection Processes For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Safe Cleaning Procedures Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)
Critical Inspection Points For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Valve and Injector Maintenance For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Checking Valve Clearance and Injector Timing For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Tools and Equipment For Maintaining Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Detailed Overhaul Process For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)
Common Troubleshooting Tips For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Disassembly Of Fuel Lines For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Disassembly Of Exhaust Manifold For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Disassembling The Air Cleaner & The Air Shutdown Housing For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Summary of Troubleshooting and Specifications In Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)
Detroit Diesel 271,371,471,671 Inline Engine Tune Up Guide
FAQ From Detroit Diesel 71 Series Inline Engine Service Manual (271, 371, 471, 671)Â Â
