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Parts for Detroit Diesel 271 - Cylinder Kit Section
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Parts for Detroit Diesel 2-71 – Cylinder Kit Section
The Detroit Diesel 2-71 engine represents the origin of one of the most iconic two-stroke diesel engine families ever built. Compact, durable, and engineered for consistent torque output, the 2-71 remains a favorite among operators of vintage marine vessels, stationary power generators, and industrial equipment. Maintaining one of these engines requires precision components designed to match the original engineering tolerances—and that’s where Diesel Pro Power excels.
With over 40,000 satisfied customers worldwide, Diesel Pro Power supplies factory-quality Detroit Diesel 2-71 parts that are ready to ship, precisely machined, and supported by a team of experts who specialize in the legendary Series 71 platform. This section focuses on cylinder kits, liners, rebuild kits, piston rings, gaskets, and supporting components designed specifically for Detroit Diesel 2-71 natural (non-turbocharged) engines.
Detroit Diesel 2-71 Engine Overview
The Detroit Diesel 2-71 is a two-cylinder, two-stroke engine featuring a displacement of 142 cubic inches (2.33 liters). Each cylinder has a bore of 4.25 inches and a stroke of 5 inches, which is consistent across all Series 71 engines. The “2” in 2-71 denotes the number of cylinders, while the “71” signifies the cubic-inch displacement per cylinder.
This lightweight yet rugged engine was widely used in:
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Marine auxiliary power units
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Small generators
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Construction and agricultural machinery
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Early military and industrial vehicles
Its two-stroke cycle requires precise air scavenging through the use of a Roots-type blower. Proper cylinder compression and combustion efficiency depend heavily on the quality of components such as liners, pistons, rings, and gaskets—all of which are included in Diesel Pro Power’s 2-71 rebuild solutions.
Complete Rebuild Kits for Detroit Diesel 2-71
Detroit Diesel Rebuild Kit for 2-71 Engine (Inframe Kit – Natural)
The inframe rebuild kit provides everything required to overhaul your 2-71 without removing it from the frame. Each kit includes high-quality pistons, rings, cylinder liners, seals, and bearings, ensuring optimal fit and long-term performance.
These kits are specifically designed for engines with one-piece pistons and natural aspiration (non-turbocharged). They restore compression, fuel efficiency, and engine balance while maintaining Detroit Diesel’s original performance characteristics.
Key Benefits:
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Restores full compression and fuel efficiency
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Reduces oil consumption and blow-by
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Provides OEM-level fitment for precise installation
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Includes all major wear components for an in-frame rebuild
Cylinder Kits for Detroit Diesel 2-71
The standard cylinder kit is one of the most essential items for maintaining the 2-71. It includes the piston, rings, and liner—all manufactured to exact OEM specifications. Diesel Pro Power’s kits are compatible with other Series 71 variants (3-71, 4-71, 6-71), ensuring cross-compatibility within the same family while remaining focused on 2-71 applications.
Features:
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Designed for Detroit Diesel 2-71 engines
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Maintains factory compression ratio and fit
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Ensures smooth combustion and reliable sealing
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Ready-to-install configuration for quick turnaround
Cylinder Liners for Detroit Diesel 2-71
High-quality cylinder liners are essential for maintaining the proper compression and oil control that Detroit Diesel two-strokes are known for. Diesel Pro Power’s standard liners are precision-machined to match OEM wall thickness and cooling port dimensions.
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Engineered for consistent cooling and oil retention
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Made from durable alloy cast iron
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Compatible with Series 71 engines including the 2-71
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Designed for long wear and reduced scuffing
Oversized Liners and Inserts:
For engines that have been rebuilt multiple times or require precision fitting, Diesel Pro offers liner inserts and oversized liners (.010"–.030") to restore proper liner seating depth.
Liner Inserts and Shims:
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Standard and oversize inserts for accurate liner seating
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Available in thicknesses from .002" to .003" for fine-tuning
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Helps prevent coolant leaks and restores proper compression
These small components are often overlooked but play a critical role in achieving proper cylinder protrusion and maintaining head gasket integrity.
Piston Rings and Retainers
Each piston ring set for the 2-71 is crafted for superior oil control and sealing. Diesel Pro Power’s Detroit Diesel Ring Sets meet or exceed OEM standards, offering long-lasting performance in both marine and industrial applications.
Key Advantages:
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Provides tight compression sealing
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Reduces oil loss and blow-by
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Designed for both natural and turbocharged Series 71 variants
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Made from heat-treated, wear-resistant alloys
A small but critical component, the piston pin retainer ensures the wrist pin remains properly seated during the engine’s high-speed cycles. Diesel Pro supplies reliable retainers that withstand vibration and heat over thousands of operating hours.
Gasket Kits and Sealing Components
Complete Engine Overhaul Gasket Kit for 2-71
A full overhaul gasket kit is essential for sealing every major engine component after a rebuild. Diesel Pro Power’s kits include head gaskets, oil seals, intake and exhaust manifold gaskets, and other vital seals to ensure a leak-free rebuild.
Features:
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Compatible with Detroit Diesel 2-71 engines
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Includes all seals for in-frame or full overhauls
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Manufactured with premium heat-resistant materials
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Ensures proper sealing under compression and temperature fluctuations
Crankshaft Seals
Diesel Pro offers both front and rear crankshaft seals in standard and oversize configurations. These seals prevent oil leaks and protect against dust and moisture infiltration.
Front and Rear Crankshaft Seals:
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Standard single-lip design for smooth rotation
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Oversize options available for worn crankshaft housings
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Durable construction to handle two-stroke crankcase pressures
The rear crankshaft sleeve supports the oversized seal option, ensuring a precise fit on engines that have undergone extensive rebuilds.
Supporting Tools and Accessories
A proper rebuild doesn’t stop at the parts—it also requires specialized tools. Diesel Pro Power offers OEM-grade service tools to make rebuilding a Detroit Diesel 2-71 efficient and accurate.
This heavy-duty puller allows for the safe removal of liners without damaging the block. Designed for Series 53 and 71 engines, it’s a must-have for professional engine rebuilders.
Proper piston ring installation ensures no breakage or distortion during assembly. Diesel Pro’s ring assembly tool simplifies this process, ensuring consistent compression sealing.
Tune-Up Kit for Series 53, 71, and 92
A complete tune-up kit is available for service professionals maintaining multiple Detroit Diesel engines. This comprehensive tool set includes all gauges, feelers, and fixtures required for timing, injector height adjustment, and governor calibration.
Fuel System Components
Primary and Secondary Fuel Filters
Reliable fuel filtration is key to protecting injectors and maintaining efficient combustion. Diesel Pro offers both spin-onand cartridge-type filters for the 2-71 engine.
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Available in spin-on and cartridge types
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Efficiently remove particulates and water before reaching injectors
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Thread sizes compatible with Series 71 filter bases
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Provide finer filtration to protect injector components
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Maintain optimal fuel pressure and atomization
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Available in both spin-on and cartridge formats
Fuel Filter Removal Tools
Diesel Pro’s filter removal wrenches simplify maintenance by allowing precise control when loosening or tightening spin-on filters.
Cooling System Components
Thermostat and Gasket
Maintaining correct operating temperature is essential for the longevity of two-stroke engines. The 170°F thermostatensures optimal coolant flow for stable operation, while the thermostat gasket provides reliable sealing under high heat and vibration.
A clean cooling system prevents overheating and corrosion. Diesel Pro’s radiator cleaner is formulated specifically for diesel applications, safely dissolving scale and residue buildup.
Paints and Finishing Products
After completing a rebuild, many owners choose to refinish their Detroit Diesel 2-71 with factory-correct paint. Diesel Pro supplies Detroit Green engine paint and primer, allowing restorers to achieve an authentic factory look while also protecting the metal surfaces from corrosion.
Available Paint Products:
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Detroit Green Paint: Signature OEM color
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Engine Primer: Provides excellent adhesion for long-lasting protection
Both products are available for ground shipping within the U.S. and Canada.
Temperature and Monitoring Components
The 205°F temperature switch is a reliable safety component that helps monitor engine operating conditions. It automatically triggers alarms or shutoff circuits when overheating occurs.
Features:
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1/2" NPT thread
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Compatible with Detroit Diesel, Cummins, and Caterpillar engines
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Ensures operational safety under continuous load
Diesel Pro Power also provides mechanical and electrical gauges for oil pressure, water temperature, and RPM monitoring. Options include:
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Standard mechanical gauges
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Mechanical gauges with alarms
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12V and 24V electrical gauges
These ensure operators can track vital engine parameters in real-time, extending engine service life and preventing costly failures.
Why Choose Diesel Pro Power for Your Detroit Diesel 2-71 Parts
Rebuilding or maintaining a Detroit Diesel 2-71 requires precision, experience, and confidence in your parts supplier. Diesel Pro Power stands apart by providing:
1. Proven Reliability:
Every part is tested and inspected to ensure exact compatibility with Detroit Diesel specifications.
2. Global Customer Base:
With over 40,000 satisfied customers worldwide, Diesel Pro Power has earned its reputation as the most trusted online source for Detroit Diesel components.
3. Fast Shipping:
All parts are in stock and ready to ship, minimizing downtime for vessel operators and equipment owners.
4. Expert Support:
Diesel Pro’s team specializes in legacy Detroit Diesel engines, offering expert guidance for part selection, installation, and cross-compatibility questions.
5. One-Stop Shop:
From complete overhaul kits to individual seals, gauges, and tools, Diesel Pro provides every part you need to keep your 2-71 running for decades more.
