Parts for Detroit Diesel 671 Non-Turbo - (4 Valve Head Type) for Canada - Oil Pump Section

Parts for Detroit Diesel 671 Non-Turbo (4-Valve Head Type) – Oil Pump Section

The Detroit Diesel 671 Non-Turbo engine represents one of the most proven and durable designs in diesel engine history. Its reputation for longevity and serviceability has made it a mainstay in marine propulsion, auxiliary power generation, and industrial equipment. This catalog section covers every essential component of the oil system designed specifically for the Detroit Diesel 671 Non-Turbo 4-valve head configuration, focusing on premium-quality rebuilt pumps, coolers, gaskets, seals, and filtration hardware available through Diesel Pro Power.

Understanding the Detroit Diesel 671 Oil System

The lubrication system in the Detroit Diesel 671 engine ensures smooth and efficient operation by continuously circulating oil through the engine’s bearings, camshaft, pistons, and valve train. Oil also aids in cooling internal components by transferring heat away from friction surfaces.

A typical 671 oil circuit consists of:

• An oil pump that draws oil from the pan and pressurizes it through the system.

• Filters that remove impurities and prevent abrasive wear.

• A plate-style oil cooler that maintains stable operating temperature.

• Pressure regulation and monitoring components that ensure the correct oil flow to critical parts.

In the 4-valve head version, the oil system supports higher airflow and slightly different head geometry, so maintaining consistent lubrication is even more important for performance and durability.

Rebuilt Oil Pumps for the 671 Non-Turbo

At the core of the system is the oil pump—a precision gear-type assembly responsible for delivering oil at a controlled pressure to every moving part of the engine. Diesel Pro Power offers professionally rebuilt right-hand oil pumps specifically calibrated for the 671 Non-Turbo model.

Each rebuilt pump undergoes complete disassembly, inspection, machining, and reassembly with new seals, bushings, and precision-ground gears. Afterward, every unit is bench-tested to verify pressure output and flow rate according to original Detroit Diesel factory standards.

Key Advantages of Rebuilt Oil Pumps from Diesel Pro Power:

• Accurate pressure delivery for reliable lubrication at all speeds.

• Reduced wear and noise through correct gear clearance and alignment.

• Fully compatible with Detroit Diesel 371, 471, and 671 right-hand rotation engines.

• Environmentally responsible rebuild process that reuses durable cast-iron housings while replacing all wear components.

These rebuilt pumps restore proper oil flow even under high-load marine or stationary conditions and are backed by Diesel Pro Power’s quality assurance guarantee.

Oil Pump Repair Kits

For maintenance shops or operators who prefer to rebuild their own assemblies, Diesel Pro Power supplies comprehensive oil pump repair kits. Each kit contains matched gears, bearings, gaskets, and seals that allow technicians to refurbish existing units and restore factory-level performance.

Benefits of Using a Repair Kit:

• Extends service life of the existing pump body.

• Provides cost-effective maintenance compared with replacing the complete unit.

• Ensures continued reliability in demanding environments.

These kits are especially valuable for fleets running multiple 671 engines where proactive maintenance can prevent downtime and preserve consistent oil pressure across all equipment.

Gaskets, Seals, and Shims

Oil system integrity depends on maintaining airtight and leak-free joints throughout the lubrication circuit. Diesel Pro Power offers a full selection of oil pump cover gaskets, oil pressure regulator gaskets, and precision shims used to set pump gear end-play.

Oil Pump Cover Gaskets
These gaskets create a dependable seal between the oil pump body and its cover plate. Made from oil-resistant composite materials, they ensure correct pressure retention even after thousands of operating hours.

Shims for Oil Pumps
Shims are installed between components to achieve the exact gear end clearance specified for Detroit Diesel oil pumps. Correct clearance prevents premature wear, maintains smooth rotation, and stabilizes oil pressure output.

Oil Pressure Regulator Valves and Gaskets
The pressure regulator valve automatically adjusts flow to maintain consistent pressure under different operating speeds and loads. Over time, this component can wear or stick, leading to low or fluctuating oil pressure. Replacing it restores stability and protects bearings and pistons from inadequate lubrication.

Oil Coolers and Heat Management

Efficient temperature control is essential for maintaining oil viscosity and overall engine longevity. The Detroit Diesel 671 Non-Turbo employs a plate-type oil cooler that transfers excess heat from the oil to the engine’s cooling system.

Diesel Pro Power supplies a variety of plate configurations—including six, eight, twelve, and thirteen plates—allowing operators to select the correct cooler for the engine’s duty cycle and installation.

Features of Detroit Diesel-Style Plate Coolers:

• Durable brazed-plate construction resists vibration and thermal stress.

• Optimized oil flow channels provide even cooling across all plates.

• Suitable for marine and stationary setups with varying load profiles.

To complement the coolers, the catalog also includes gaskets and O-rings designed to withstand oil pressure and coolant exposure. These include gaskets for oil cooler housings, cooler tubes, and adaptors used in marine applications. Each gasket ensures a leak-free seal between mating surfaces.

Oil Pans and Bottom Covers

The oil pan serves as the reservoir that stores and collects engine oil. Diesel Pro Power offers tin-style oil pans for the Detroit Diesel 6-71 block, along with matching gaskets and bottom covers. These components are built to original specifications for reliable fit and sealing.

Highlights of the 6-71 Oil Pan Assemblies:

• Heavy-gauge steel construction with corrosion-resistant finish.

• Designed to withstand vibration and impact in marine environments.

• Easy access for draining and cleaning.

The oil pan cover, or bottom plate, provides added protection against debris and helps maintain correct oil volume during operation. Properly sealing the pan with new gaskets is essential to prevent air ingress and oil leaks that could compromise pressure.

Oil Filtration Components

Filtration is vital to keeping engine oil clean and free from contaminants. Diesel Pro Power offers several options tailored to different generations of Detroit Diesel lubrication systems.

Oil Filter Bases
Designed for cartridge-style filters, the base maintains tight sealing under pressure while ensuring smooth oil flow through the filter element.

Cartridge-Type Oil Filters
The traditional paper-element design used in many original 671 installations. These filters offer reliable dirt-holding capacity and maintain proper oil flow.

Spin-On Conversion Adaptors
Many operators choose to modernize their lubrication systems using an adaptor that converts the older cartridge setup to a spin-on configuration. This simplifies filter changes, reduces mess, and ensures consistent filtration performance with easily available modern elements.

Spin-On Filters
High-efficiency filters with integrated bypass valves and heavy-duty housings. Ideal for both marine and stationary engines requiring quick maintenance.

Supporting Accessories
Gaskets for the filter adaptor, copper washers, and filter removal wrenches ensure a secure and leak-free installation. Diesel Pro Power carries all associated small components to complete the system.

Dipsticks, Tubes, and Oil Filler Assemblies

Accurate oil level measurement is critical to preventing low-oil conditions that can cause bearing damage. The catalog includes standard-length dipsticks, extended-length versions for deep-sump configurations, and matching tubes and guides to fit all Detroit Diesel Series 71 engines.

Dipsticks
Available in multiple lengths to accommodate both industrial and marine oil pan depths, each dipstick features clearly marked indicators for “Full” and “Add” levels.

Dipstick Tubes and Guides
Durable steel tubing designed for precise fit. The dipstick guide provides support and ensures easy removal for routine inspections.

Oil Filler Caps
A secure filler cap prevents contaminants from entering the crankcase and maintains positive crankcase ventilation. The cap seals tightly to the valve cover and resists heat and oil vapor.

Oil Pressure Regulation and Monitoring

Maintaining consistent oil pressure ensures every moving part of the 671 engine receives adequate lubrication. Diesel Pro Power offers replacement pressure regulator valves, springs, and sealing gaskets, all engineered to OEM specifications.

Pressure Switches
To aid in monitoring, several pressure switch ratings are available—commonly 5, 10, 20, and 27 pounds per square inch. These switches operate “make/break” electrical circuits that trigger alarms or automatic shutdown systems in case of low pressure.

Gauges and Monitoring Equipment
Operators can choose from mechanical gauges with alarms or electric gauges for 12- or 24-volt systems. Installing accurate gauges allows continuous observation of oil pressure, a key indicator of engine health.

Cooling System Interface Seals

In marine versions of the 671 Non-Turbo engine, the oil cooler integrates with the water manifold. Diesel Pro Power provides all required seals and gaskets for this interface, ensuring that oil and coolant remain isolated.

Available Seals Include:

• Circular water seals with reinforced lips for reliable pressure retention.

• Manifold-to-cooler housing seals in multiple diameters to match different setups.

These seals are constructed from high-temperature rubber compounds formulated to resist both oil and coolant exposure.

Small Components and Hardware

Even minor parts play an essential role in preventing leaks and ensuring system reliability. Diesel Pro Power stocks copper sealing washers, O-rings, and valve springs for flywheel and oil regulation systems. Each piece is manufactured to tight tolerances to provide lasting service life in harsh operating conditions.

Why Choose Diesel Pro Power for Detroit Diesel 671 Oil System Components

With more than 40,000 satisfied customers worldwide, Diesel Pro Power has built a reputation as the most trusted source for Detroit Diesel replacement parts. Every item in this catalog is hand-selected for quality, precision, and long-term reliability.

What Sets Diesel Pro Power Apart:

• Expert-verified compatibility for Detroit Diesel 671 engines.

• Rebuilt and new components tested to original factory standards.

• Fast, reliable worldwide shipping from a centrally located U.S. warehouse.

• Dedicated customer service for technical assistance and order tracking.

• Real-time online inventory and secure ordering available 24/7.

By choosing Diesel Pro Power, you ensure that every component in your 671 Non-Turbo oil system—from the pump to the smallest gasket—is built to perform under the toughest conditions. Whether you’re maintaining a commercial vessel, an industrial generator, or vintage equipment, these components deliver the reliability and performance that Detroit Diesel owners expect.