Parts for Detroit Diesel 471 Non-Turbo - (4 Valve Head Type) for Canada - Oil Pump Section

Parts for Detroit Diesel 471 Non-Turbo (4-Valve Head Type) – Oil Pump Section

The Detroit Diesel 471 Non-Turbo (4-Valve Head Type) engine is a part of the legendary Series 71 family — a robust, two-cycle diesel engine design known for its dependability, mechanical simplicity, and impressive power-to-weight ratio. The oil system is the heart of this engine’s longevity, maintaining proper lubrication, cooling, and cleanliness across every moving component. This section focuses on every major oil system component, from the main oil pump to the gaskets, coolers, filters, and seals that keep your 471 running efficiently under load.

All the products listed here are designed for Detroit Diesel 471 Non-Turbo engines equipped with 4-valve cylinder heads, and all parts are inspected, rebuilt, or manufactured to OEM specifications. Whether you’re overhauling an entire oiling system or replacing an individual component, Diesel Pro Power provides parts that meet or exceed original Detroit Diesel quality standards.

Understanding the Oil System on the Detroit Diesel 471

The oil system in the 471 Non-Turbo 4-valve engine ensures continuous lubrication across crankshaft bearings, camshafts, and valve train components while removing heat and contaminants. A properly functioning oil pump maintains oil flow at specific pressures — typically ranging from 40 to 60 PSI at operating temperature — to guarantee the right film of lubrication even at high engine loads.

The system consists of the oil pump assembly, oil coolers, pressure regulation valves, gaskets, shims, filters, adapters, and seals, all working together in harmony. When one component fails, oil pressure drops, leading to wear, scoring, and potential engine seizure. That’s why rebuilding or replacing worn-out components with high-quality replacements is essential.

Detroit Diesel 471 Oil Pump Assembly

The oil pump is the backbone of the lubrication system. For the 471 engine, Diesel Pro Power offers rebuilt right-hand drive oil pumps for both 371 and 471 engines, as well as multi-fit versions suitable for 671 configurations. Each pump is professionally remanufactured, meaning it has been completely disassembled, cleaned, measured, and rebuilt with new internal components such as gears, shafts, and bushings.

The rebuilt pumps undergo:

• Precision machining for exact OEM clearances

• Pressure testing for flow and efficiency

• Replacement of all gaskets and seals

• Verified alignment of gear teeth to prevent cavitation and scoring

Every rebuilt Detroit Diesel oil pump comes with a refundable core deposit, allowing customers to return their old unit for credit once their new pump is installed. This sustainable approach keeps high-quality components in circulation and reduces downtime for operators.

Oil Pump Shims and Installation Components

Detroit Diesel designed the Series 71 oil pumps with adjustable shims that allow for precise end-clearance adjustments during installation. These thin steel spacers ensure optimal gear engagement inside the pump housing. Using incorrect shim thickness can lead to either excessive oil pressure (if the clearance is too tight) or low pressure and poor lubrication (if too loose).

Oil pump shims for the 3-71, 4-71, and 6-71 engines are available in various thicknesses, ensuring that each rebuild can be fine-tuned for proper oil flow. Every shim is corrosion-resistant, precision cut, and matched to Detroit Diesel specifications.

Gaskets for Oil Pump Covers

Even a small oil leak can cause serious problems over time, leading to pressure loss and contamination. Diesel Pro Power supplies OEM-grade gaskets for oil pump covers that ensure leak-free sealing between the pump housing and cover plate. These gaskets are made of durable, oil-resistant materials designed to withstand continuous exposure to high temperature and pressure.

Available for 371, 471, and 671 engines, these gaskets help maintain a clean and efficient lubrication circuit and are a must-replace item during any oil pump service.

Oil Pressure Regulator Valve Assembly

The oil pressure regulator valve is responsible for maintaining a steady pressure across the lubrication system, regardless of engine speed or load. A worn or sticking valve can cause erratic readings and potential bearing damage.

The replacement oil pressure regulator valve for Detroit Diesel 371, 471, and 671 engines restores consistent oil flow. Manufactured to exacting standards, each valve body is precision-ground and tested to ensure proper relief characteristics.

To complete the installation, Diesel Pro Power also carries the oil pressure regulator gasket, ensuring a secure and leak-free seal between the housing and valve body.

Oil Pump Repair Kits

For technicians or rebuilders maintaining older Detroit Diesel engines, a comprehensive oil pump repair kit is available for 371 and 471 engines. These kits include internal gears, seals, and critical wear components that restore pump efficiency and oil flow performance. Using a repair kit is ideal for maintaining the original pump housing while ensuring all moving parts meet new-part standards.

Each kit is quality-tested and built to handle continuous operation in both industrial and marine applications, where oil system reliability is non-negotiable.

Detroit Diesel Oil Coolers and Cooling System Gaskets

The oil cooler in a 471 engine helps maintain optimal oil temperature, preventing breakdown of lubrication properties and ensuring consistent viscosity. Diesel Pro Power offers 6-plate and 8-plate oil coolers designed specifically for the Detroit Diesel Series 71 line.

These coolers use precision-brazed plates to maximize surface area for heat exchange. The 6-plate model suits standard applications, while the 8-plate cooler provides enhanced cooling for high-load or marine operations.

To complete the installation, Diesel Pro Power stocks all related oil cooler gaskets, including:

• Gaskets for oil cooler housings

• Gaskets for cooler tubes (marine applications)

• Gaskets for cooler adaptors to block connections

These gaskets are built from oil-resistant composite materials that maintain sealing integrity even under high-temperature oil circulation.

O-Rings and Seals for Marine Applications

Marine engines require additional sealing to protect against corrosion and water ingress. The O-ring seals for oil cooler tubes and water manifold seals offered by Diesel Pro Power are designed specifically for Detroit Diesel marine configurations of the 471 engine.

Each seal is crafted from high-temperature, chemical-resistant elastomeric material to prevent oil and coolant leaks between components such as:

• Oil cooler housing to water manifold joints

• Oil cooler adaptor connections

• Dipstick tube and filler cap interfaces

Proper sealing not only prevents oil contamination but also ensures the long-term protection of the crankshaft bearings and camshaft journals.

Oil Pan and Oil Filter Components

The oil pan gasket plays a critical role in maintaining the lower end of the lubrication system. Diesel Pro Power’s gasket for the 4-71 engine (and compatible configurations such as the 16V71 and 16V92 lower pans) provides long-lasting leak protection and easy installation during oil pan servicing or cleaning.

In addition, Diesel Pro Power supplies several oil filter components:

• Oil filter base for cartridge-type filters

• Spin-on filter adaptor kits to upgrade older systems

• Oil filter gaskets and copper washers to ensure tight sealing

• Spin-on and cartridge-type filters designed for maximum filtration efficiency

Upgrading to a spin-on filter assembly simplifies routine maintenance and reduces the risk of leaks associated with older cartridge housings.

Dipstick Assemblies and Measuring Components

Accurate oil level monitoring is vital for maintaining proper lubrication. Diesel Pro Power carries both 61-inch and 72-inch dipsticks for Detroit Diesel 471 engines, along with dipstick tubes and guides designed to fit all Series 71 configurations.

These components are crafted from corrosion-resistant materials and ensure a proper fit with the oil filler cap assembly. The oil filler cap for the head cover (2-inch diameter) completes the system, keeping contaminants out and pressure stable within the crankcase.

Pressure Switches and Monitoring Equipment

To safeguard your 471 engine from oil pressure fluctuations, Diesel Pro Power provides a range of fuel and oil pressure switches:

• 5 PSI make/break switch for low-pressure alarms

• 10 PSI, 20 PSI, and 27 PSI switches for customized monitoring and control circuits

Each switch uses a 1/8-inch NPT connection and can be installed directly into the oil gallery or filter housing to trigger dashboard indicators or shutdown systems when pressure drops below safe limits.

For precise engine diagnostics, Diesel Pro also carries mechanical and electric gauges (12V and 24V options) to measure oil pressure during operation.

Additional Seals and Adaptors

Various other seals complete the oil system’s integrity, including:

• Water seals between the oil cooler housing and cooling manifold

• Oil cooler adaptor gaskets between the block and cooler housing

• Copper washers for banjo fittings and drain plugs

Every component is made for durability and designed to meet Detroit Diesel OEM tolerances, ensuring that your rebuilt 471 operates as efficiently as the day it left the factory.

Common Oil System Maintenance Practices for the 471

To keep your engine running smoothly:

• Check oil pressure regularly using calibrated gauges. Normal readings at idle are around 20 PSI and should rise to 40–60 PSI under load.

• Replace the oil and filter every 250–300 hours of operation in marine or industrial environments.

• Inspect the oil pump drive gear for wear or scoring during every major service.

• Flush oil coolers to prevent internal restrictions or sludge buildup.

• Use only high-detergency diesel-grade engine oils, such as SAE 40 CF-2 or newer specifications, for Series 71 engines.

Maintaining your lubrication system using genuine-quality parts drastically reduces downtime, prevents catastrophic bearing failures, and extends the life of your Detroit Diesel 471 engine.

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

With more than 40,000 satisfied customers worldwide, Diesel Pro Power has become the leading online source for Detroit Diesel engine parts. Operators across marine, industrial, and power generation sectors trust Diesel Pro for their extensive catalog, unmatched expertise, and fast global delivery.

Here’s why Diesel Pro Power stands out:

• Premium Rebuilt & Aftermarket Parts: Every oil pump, gasket, and seal is either new or professionally remanufactured to factory standards.

• Expert-verified compatibility: Each part is cross-checked for fitment to the Detroit Diesel 471 Non-Turbo 4-valve configuration.

• Worldwide shipping: Fast delivery to commercial fleets, shipyards, and workshops around the globe.

• Dedicated customer support: Diesel Pro’s experienced staff can assist with technical specifications, installation advice, and order tracking.

• Comprehensive inventory: Every oil system component — from the oil cooler to the pressure switch — is available in one convenient location.

• Reliable warranty coverage: Rebuilt and new components are backed by Diesel Pro Power’s quality assurance guarantee.

• 24/7 ordering: Customers can shop online anytime, with real-time stock updates and clear product descriptions.

When you choose Diesel Pro Power, you’re not just buying parts — you’re partnering with an experienced supplier that understands Detroit Diesel engines inside and out. Each product in this catalog supports the continued reliability of one of the most durable diesel engine families ever built.