Parts for Detroit Diesel 671 Non-Turbo - (4 Valve Head Type) for Australia - Marine Water Pump Section

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

The Detroit Diesel 6-71 Non-Turbo engine with a 4-valve head design remains one of the most respected marine powerplants in the industry. Known for its balance between simplicity and reliability, the 6-71 continues to serve in countless vessels—from classic yachts and fishing boats to tugboats, workboats, and military craft. To keep these legendary engines performing at their best, proper cooling system maintenance is essential. Diesel Pro Power provides a complete range of marine water pumps, impellers, gaskets, thermostats, and heat exchanger components designed specifically for the Detroit Diesel 671 Non-Turbo engine.

Below is a complete breakdown of the essential raw water cooling components for the 6-71 Non-Turbo, including both new and rebuilt marine water pumps, impellers, seals, and accessories—all available online and ready to ship worldwide.

Marine Water Pumps for Detroit Diesel 6-71 Non-Turbo

Marine Water Pump (New)
This new marine water pump is engineered for Detroit Diesel 53 and 71 Series marine engines, including the 6-71 Non-Turbo model. The pump features a bidirectional design, allowing it to turn either right or left, simplifying installation regardless of rotation direction.

• Port Type: 1” flange

• Includes: Drive gear and mounting adapter

• Material: Marine-grade bronze for saltwater resistance

• Performance: Optimized for constant sea water flow to the heat exchanger and oil cooler

This pump ensures efficient raw water intake, keeping engine temperatures stable under varying load conditions. Built to OEM specifications, it’s corrosion-resistant and precision-balanced for extended service life.

Marine Water Pump (Rebuilt)
The rebuilt Detroit Diesel marine water pump provides a cost-effective and environmentally friendly option. Sold with a refundable core deposit, each unit is fully remanufactured with new seals, bearings, and wear components.

• Bidirectional (Turns Right or Left)

• Port Type: 1 ½” flange

• Includes: Adapter and drive gear

• Impeller Height: 2 ½”

Rebuilt pumps go through extensive testing to ensure proper pressure and flow characteristics, meeting or exceeding OEM standards. These units offer the same performance as new pumps but at a fraction of the cost.

Marine Water Pump (Factory Assembled)
This variation of the Detroit Diesel raw water pump combines factory-new components with pre-calibrated tolerances. It includes the 1½” port adapter, drive gear, and marine seals, guaranteeing an easy, direct fit to the 6-71 engine. Designed for consistent cooling under continuous duty cycles, it ensures reliable operation for vessels that demand uninterrupted performance.

Marine Water Pump Components

Impellers
The impeller is the heart of the raw water pump, ensuring steady water circulation throughout the cooling system. Diesel Pro Power offers several high-quality impeller options compatible with the Detroit Diesel 6-71 Non-Turbo:

• 12-blade impeller (3¾” diameter, 2½” height) for standard bronze pumps

• 10-blade impeller (2½” diameter, 2” height) for compact or auxiliary pumps
  Each impeller is crafted from durable, flexible neoprene designed to withstand prolonged saltwater exposure and temperature fluctuations. A worn impeller can quickly lead to overheating—routine replacement ensures maximum longevity for your Detroit Diesel engine.

Water Pump Repair Kit
The complete Detroit Diesel marine water pump repair kit for the 6V53, 6V71, 6-71, and 6V92 includes seals, bearings, and fasteners for pumps with a 2½” impeller height. This kit enables thorough in-field servicing without replacing the entire pump housing—an ideal solution for operators looking to minimize downtime and cost.

Gaskets and Seals
Proper sealing is crucial to prevent coolant and seawater leaks that can lead to efficiency losses or corrosion. Diesel Pro Power supplies all related gaskets for the Detroit Diesel 6-71 Non-Turbo, including:

• Thermostat housing gasket

• Thermostat gasket

• Marine water pump mounting gasket

• Adapter gasket for 353, 453, 271, 371, 471, and 671 engines

• Plate and flywheel gaskets for water pump assembly

Additionally, mechanical seals, bearing oil seals, and adapter seals are available to maintain pump integrity and long-term reliability.

Thermostats and Cooling Regulation

The Detroit Diesel 671 thermostat is calibrated to open at 173°F, ensuring optimal operating temperature for both fresh and saltwater applications. Maintaining the correct temperature improves fuel efficiency and reduces engine wear. Complementary gaskets are also available to ensure perfect sealing within the thermostat housing.

Heat Exchanger and Freshwater Cooling Components

To complement the raw water system, Diesel Pro Power carries a full line of heat exchanger parts for the 6-71 Non-Turbo engine:

• Heat exchanger cores

• Marine heat exchange tanks (used and reconditioned units available)

• Heat exchanger gasket kits for 53, 71, and 92 Series engines

• Glands and seals for marine engine tanks

Each component is designed for corrosion resistance and effective heat transfer, protecting the engine block and cylinder liners from thermal stress.

Oil Cooler Water Inlet Gaskets and radiator gaskets are also available, ensuring leak-free integration between the oil cooler, exchanger, and raw water circuit.

Zinc Anodes for Corrosion Protection

Saltwater environments are notoriously harsh, and zinc anodes play a vital role in safeguarding the engine’s cooling components from galvanic corrosion. Diesel Pro Power provides multiple zinc options:

• Zinc for raw water pumps (NPT ¾”, zinc length 2”)

• Zinc for heat exchangers (NPT ¾”, zinc length 3⅜”)

• Zinc for oil and fuel coolers (NPT ⅛” to ⅜”, various lengths)

Regular replacement of zincs prevents corrosion of pump housings, cooler tubes, and other brass or copper components.

Couplings, Cams, and Wear Plates

For precise drive alignment, the Detroit Diesel 21-tooth accessory drive coupling ensures efficient power transfer from the engine to the water pump.
The pump cam and wear plate are engineered to maintain consistent impeller contact, reducing mechanical friction and improving water flow. These parts are manufactured to exacting OEM tolerances, providing years of dependable service under continuous marine operation.

Covers, Screws, and Fasteners

Diesel Pro Power stocks pump covers compatible with both 2½” and 3½” impeller models. These heavy-duty bronze covers help retain pressure within the pump cavity while resisting saltwater corrosion.
Associated fasteners such as cover screws—five required per plate—are available individually, allowing quick and simple service procedures.

Cooling System Accessories

Radiator Caps and Necks
A properly sealing radiator cap maintains the correct pressure in the closed-loop cooling system, preventing vapor lock and coolant loss.

• Standard cap rated at 7 lbs pressure

• Cap neck designed with 1.63” inner and 1.69” outer diameter for tight fitment

Silicone Coolant Hoses
Marine-grade silicone hoses provide exceptional flexibility, heat resistance, and long lifespan compared to rubber alternatives. Available in multiple inside diameters ranging from 1” to 4”, these hoses resist oil, salt, and coolant degradation. Each section is sold per foot, perfect for custom installations.

Hose Clamps
To secure hoses in high-pressure or vibration-prone environments, Diesel Pro Power offers stainless steel hose clamps in multiple sizes, from 9/16” to 4” effective diameter ranges. Each clamp delivers uniform pressure distribution and corrosion resistance for reliable, long-term sealing.

Paint and Finishing Accessories

Maintain the authentic look of your Detroit Diesel 6-71 engine with Detroit Green engine enamel. This premium paint withstands heat and oil exposure, preserving your engine’s original marine appearance. Available for ground shipping within the U.S. and Canada.

Why Buy Raw Water Pumps and Cooling Parts for Your Detroit Diesel 671 Non-Turbo from Diesel Pro Power

When maintaining or restoring a Detroit Diesel 6-71 Non-Turbo engine, reliability and precision matter most. Diesel Pro Power has become the global leader in Detroit Diesel marine parts, trusted by over 40,000 satisfied customers worldwide.

Comprehensive Inventory
From complete pumps to minor seals, every part you need is in one place—streamlining your maintenance process and eliminating compatibility issues. Each product is specifically selected for the 6-71’s cooling system, ensuring seamless integration and OEM-level performance.

Fast Worldwide Shipping
Diesel Pro Power maintains extensive inventory, ensuring nearly every item is in stock and ready to ship immediately. With real-time order tracking, you can monitor every step—from checkout to delivery—no matter where your vessel is located.

Expert Technical Support
Our customer service team includes Detroit Diesel-trained specialists who can help identify the correct impeller size, gasket type, or thermostat rating for your exact engine configuration. Whether your 6-71 is powering a sportfishing yacht or a commercial tug, we can help you find the right fit the first time.

Marine-Grade Quality
All cooling components meet or exceed OEM specifications. The materials used—such as bronze housings, stainless fasteners, and high-grade elastomers—are engineered for the harsh realities of saltwater environments. Each part undergoes thorough inspection for precision, ensuring dependable operation in demanding marine conditions.

Simplified Ordering and Core Returns
For rebuilt components such as water pumps, Diesel Pro Power offers transparent core return procedures and immediate credit processing once your core is received. This allows customers to get their vessel back on the water without unnecessary delay.

Trusted by Professionals and Enthusiasts Alike
Commercial fleets, military operators, and private owners rely on Diesel Pro Power to keep their Detroit Diesel engines in top condition. Our long-standing reputation is built on precision, reliability, and personalized customer service that goes beyond the transaction.