Parts for Detroit Diesel 471 Non-Turbo - (2 Valve Head Type) for Australia - Oil Pump Section

Parts for Detroit Diesel 471 Non-Turbo (2-Valve Head Type) — Oil Pump Section

The Detroit Diesel 471 Non-Turbo (2-valve head) engine is a cornerstone of the Series 71 family — one of the most iconic two-stroke diesel designs ever produced. Known for its distinctive sound, mechanical reliability, and ease of service, the 471 has powered everything from workboats and generators to trucks and military vehicles for decades. Its oiling system is the lifeblood of this classic engine, maintaining proper lubrication across crankshaft journals, bearings, pistons, and blower gears.

This section of Diesel Pro Power’s catalog focuses on the oil pump and related lubrication components for the Detroit Diesel 471 Non-Turbo 2-valve engine. Whether you are rebuilding a marine auxiliary, refurbishing a standby generator, or restoring an older truck, these components ensure that your 471 engine maintains optimal oil pressure and flow for years to come.

The Function of the Oil Pump in the Detroit Diesel 471

The oil pump is the heart of the lubrication system. Driven mechanically off the engine’s gear train, it draws oil from the sump and sends it under pressure through filters, galleries, and cooling circuits before it returns to the pan. In the 471 Non-Turbo, maintaining proper oil flow is critical because the engine relies heavily on lubrication to manage both friction and internal temperature — especially within the blower assembly and cylinder liners.

A failing or worn oil pump can lead to reduced pressure, bearing damage, or complete lubrication failure. That’s why Diesel Pro Power offers rebuilt, precision-tested oil pumps for the 471 series that restore original factory performance while allowing customers to retain authentic Detroit Diesel engineering.

Rebuilt Oil Pumps for the 471 Series

Detroit Diesel Right-Hand Oil Pump for 371 & 471
This rebuilt unit delivers OEM-spec oil flow and pressure. Each pump is fully disassembled, cleaned, inspected for gear wear, re-machined where necessary, and reassembled with new bearings and seals. Pressure regulators are recalibrated to factory settings to ensure consistent lubrication across all load conditions. These right-hand pumps are designed to mount directly to the gear housing without modification, making installation quick and straightforward.

Detroit Diesel Right-Hand Oil Pump for 371, 471, & 671 Engines
This rebuilt pump offers the same proven reliability for a broader range of Series 71 engines. Like all Diesel Pro Power rebuilt components, every pump is bench-tested to verify oil pressure and flow consistency. The design maintains correct alignment with the drive gear, reducing mechanical noise and wear over time.

Both units are sold with refundable core deposits — meaning Diesel Pro Power can recycle your existing pump, contributing to sustainability while keeping vintage engines in operation worldwide.

Oil Pump Gaskets and Mounting Seals

Even the most precisely rebuilt pump depends on tight, leak-free sealing surfaces. Diesel Pro Power provides several oil pump cover gaskets for the 371, 471, and 671 engines. Manufactured from durable, heat-resistant composite material, these gaskets ensure proper sealing between the pump body and cover, preventing oil seepage under high pressure.

Available gasket options include two variations for the pump cover, each engineered to fit specific pump housings found in the different sub-models of the 471. Replacing these gaskets whenever a pump is serviced or removed is recommended to maintain long-term reliability.

Oil Pump Shims

The oil pump shim plays a small but crucial role in the correct alignment and preload of the pump’s internal gears. Diesel Pro Power offers precision-cut shims for 3-71, 4-71, and 6-71 engines, compatible with the 471 Non-Turbo configuration. These shims are used during rebuilds to restore proper gear clearance, ensuring efficient oil flow and eliminating internal binding.

Oil Pressure Regulator Valve and Components

The oil pressure regulator valve maintains consistent pressure throughout the lubrication circuit. A weak or sticking regulator can cause low oil pressure readings and premature bearing wear. Diesel Pro Power supplies OEM-quality regulator valves that are calibrated for the 371, 471, and 671 engine series. Each valve is crafted from high-strength steel and features precise spring tension for consistent performance.

Complementing this valve is the gasket for the oil pressure regulator, designed to prevent leaks where the valve assembly mounts to the engine block. Proper sealing here ensures that every drop of oil passes through the pressure control system as intended.

Oil Pump Repair Kits

For operators who prefer to rebuild their own pumps, Diesel Pro Power provides complete oil pump repair kits for the 371 and 471 engines. Each kit includes replacement gears, shafts, bushings, and seals manufactured to Detroit Diesel specifications. Whether you’re overhauling a marine propulsion engine or a stationary generator, these kits restore full pump function without needing a replacement unit.

Oil Coolers — Six- and Eight-Plate Designs

As oil circulates through the engine, it absorbs heat from bearings, pistons, and other components. To prevent overheating, the 471 Non-Turbo uses an oil-to-water cooler. Diesel Pro Power carries both 6-plate and 8-plate oil cooler assemblies for different configurations.

The 6-plate cooler is common in standard-duty engines, while the 8-plate model provides additional cooling capacity for heavy-duty or high-temperature marine applications. Each cooler features brazed-plate construction for maximum heat exchange efficiency and corrosion resistance.

Oil Cooler Gaskets and Seals

Proper sealing between cooler components is essential to prevent oil-to-water contamination. Diesel Pro Power offers a full range of oil cooler gaskets:

• Gaskets between cooler and housing

• Tube gaskets for marine applications

• O-ring seals for oil cooler tubes

• Adaptor gaskets between the block and cooler assembly

Every gasket and seal is made from oil-resistant materials designed to withstand long-term exposure to heat and pressure. These components are particularly important for marine engines, where moisture and corrosion can accelerate gasket wear.

Oil Pan and Related Components

The oil pan gasket ensures a tight seal between the oil pan and the crankcase. Diesel Pro Power provides OEM-style composite gaskets for 471 engines as well as compatible 16V71 and 16V92 applications. This gasket prevents leaks at the sump, helping maintain steady oil levels during operation.

Oil Filter System Components

Oil filtration is another key aspect of the lubrication system. The 471 Non-Turbo originally used a cartridge-type filter base, and Diesel Pro Power offers both replacement bases and modern adaptors that convert older systems to spin-on filters.

Oil Filter Base (Cartridge Type)
A direct-fit replacement designed to maintain proper oil flow through the cartridge housing.

Spin-On Filter Adaptor
For those upgrading to a modern filter system, Diesel Pro Power’s adaptor converts the original cartridge base to accept spin-on filters. This simplifies maintenance while ensuring optimal filtration efficiency.

Oil Filter Gasket
Seals the adaptor or base to the block, preventing leaks around the filter mount.

Copper Washers
Small but essential, these washers seal banjo bolts and fittings throughout the oil system, ensuring no loss of pressure.

Spin-On and Cartridge Filters
Both types are available in premium-grade materials that trap contaminants without restricting oil flow. Each filter is rated for industrial and marine duty cycles, providing extended service intervals and cleaner operation.

Oil Filter Removal Wrench
To aid in service work, Diesel Pro Power also supplies a universal wrench that fits 4-21/32 inches to 5-5/32 inches filters — ideal for both Detroit Diesel and Cummins engines.

Dipsticks, Tubes, and Guides

Accurate oil level monitoring is vital for engine longevity. Diesel Pro Power stocks multiple dipstick lengths — 61 inches and 72 inches — to suit various installations, from compact machinery to larger marine configurations.

Complementary components include:

• Dipstick Tubes, providing proper routing from the crankcase to the operator’s access point

• Dipstick Guides, ensuring a snug fit and preventing vibration damage during operation

Each piece is made from corrosion-resistant steel for long-term durability in marine and industrial environments.

Oil Filler Caps and Head Cover Components

Every engine requires a secure oil filler cap to prevent contamination and maintain internal pressure balance. Diesel Pro Power’s 2-inch oil filler cap fits directly onto the 471 head cover. It’s machined from robust metal and fitted with a durable seal, keeping oil where it belongs — inside the engine.

Water Seals and Manifold-to-Cooler Interfaces

In the 471’s combined cooling system, oil and water circuits interact closely. Diesel Pro Power carries several water sealsfor the manifold-to-cooler housing interfaces. These seals prevent cross-leakage and preserve the efficiency of both systems. Available diameters include 2-3/16", 2-1/2", and 2-3/4" to fit various configurations.

Oil Pressure Switches and Sensors

Monitoring oil pressure is essential to engine safety. Diesel Pro Power offers pressure switches in multiple ratings — 5, 10, 20, and 27 PSI make/break — suitable for Detroit Diesel and Cummins applications. Each switch triggers alarms or gauges when oil pressure deviates from safe operating ranges. Constructed with brass housings and precision-set diaphragms, these switches deliver accurate readings in both marine and industrial environments.

Gauges for Oil Pressure Monitoring

Complementing the pressure switches, Diesel Pro Power supplies a wide selection of mechanical and electrical gauges:

• Standard mechanical gauges for direct reading

• Mechanical gauges with alarms for automatic notification

• Electrical gauges in 12-volt and 24-volt configurations for panel integration

These instruments help operators keep continuous awareness of oil pressure levels, ensuring immediate response to potential lubrication issues.

Best Practices for Maintaining the Detroit Diesel 471 Oil System

1. Regular Oil Changes: Use high-detergent diesel engine oil suited to two-stroke engines, and replace filters at every change.

2. Monitor Pressure: Normal operating pressure should remain within factory specifications; fluctuations may indicate a failing pump or blocked cooler.

3. Inspect for Leaks: Gaskets and O-rings should be replaced during every major service to prevent gradual pressure loss.

4. Check the Cooler: Ensure the oil cooler is free of debris or internal leaks that could cause oil-water contamination.

5. Use Genuine-Quality Parts: Substandard components can jeopardize the precise oil tolerances of Detroit Diesel’s two-stroke design.

Why Choose Diesel Pro Power for Detroit Diesel 471 Oil System Components

Diesel Pro Power is trusted by more than 40,000 satisfied customers worldwide, supplying OEM-quality components for Detroit Diesel engines with unmatched expertise. Every item in this catalog — from rebuilt oil pumps to gaskets, filters, and sensors — is tested for fit, function, and longevity.

Benefits of Buying from Diesel Pro Power

• Proven Compatibility: Each part is guaranteed to fit the Detroit Diesel 471 Non-Turbo (2-Valve) engine precisely.

• Quality Assurance: Rebuilt and new components undergo multi-stage inspection and performance testing.

• Fast Global Shipping: Orders are dispatched quickly from Diesel Pro Power’s U.S.-based warehouse with worldwide delivery options.

• Dedicated Customer Support: Expert staff are available for technical guidance, installation help, and order tracking.

• Sustainability and Core Programs: Core return policies encourage environmentally responsible remanufacturing while offering credit back to customers.

• Comprehensive Inventory: From small washers to complete pumps, Diesel Pro Power provides every component needed for a full oil system rebuild in one place.