Detroit Diesel Marine Pumps for Engine Cooling & Seawater Systems

Detroit Diesel pumps are built to support the demanding cooling and fluid transfer needs of marine diesel engines. Designed for reliability in harsh marine environments, these pumps help maintain proper engine temperature, ensure consistent seawater circulation, and support long-term engine performance.

Marine engines rely on high-quality pump systems to circulate seawater and coolant through heat exchangers, oil coolers, and other critical engine components. Detroit Diesel marine pumps are engineered for durability and efficiency, making them a trusted choice for commercial vessels, sportfishing boats, workboats, and recreational yachts.

This category includes OEM and high-quality replacement pumps compatible with many popular Detroit Diesel engine models, including the 6-53, 6-71, 8V71, 12V71, and Series 60 engines. These pumps are designed to deliver dependable flow, resist corrosion from saltwater exposure, and maintain reliable operation even under heavy workloads.

Whether you are performing routine maintenance or replacing a worn pump, choosing the correct Detroit Diesel marine pump helps ensure proper engine cooling and optimal performance during long hours on the water.

Why Choose Detroit Diesel Marine Pumps

• Designed specifically for Detroit Diesel marine engine systems
• Reliable seawater circulation for proper engine cooling
• Durable materials built to resist corrosion in saltwater environments
• Compatible with popular Detroit Diesel engines such as 6-53, 6-71, 8V71, and Series 60
• High-flow performance for demanding marine and commercial applications
• Replacement pumps available for OEM Detroit Diesel components

There are 3 basic steps to determine the correct Detroit Diesel replacement pump or find parts for your pump:
•  The number of cover screws - 4, 5 or 6
•  The impeller depth - either 2 1/2 inches or 3 1/2 inches (if there are 5 cover screws)
•  The impeller drive - either splined or double flat drive (if there are 6 cover screws)

If there are 4 cover screws then it is a Jabsco 18780 Series or Jabsco 18790 Series pump.
Parts for these pumps are available below under 18780_series_parts
If there are 5 cover screws then the impeller depth determines the correct pump.
5 cover screws and a 2 1/2 inch impeller depth is Jabsco 2570-3100
5 cover screws and a 3 1/2 inch impeller depth is Jabsco 6980-3100

If there are 6 cover screws then the impeller drive determines the correct pump.
6 cover screws with a splined drive impeller is Jabsco 17050-0001
6 cover screws with a double flat drive impeller is Jabsco 17360-1001
6 cover screws with a double flat drive impeller and the ports shifted back is Detroit Diesel pump number 8V92TA-16V92TA

FAQs

What are Detroit Diesel marine pumps used for?

Detroit Diesel marine pumps circulate seawater or coolant through the engine cooling system to maintain proper operating temperatures and prevent overheating.

Which Detroit Diesel engines use seawater pumps?

Many Detroit Diesel marine engines use seawater pumps, including models such as the 6-53, 6-71, 8V71, 12V71, and Series 60 engines.

What does a Detroit Diesel raw water pump do?

A raw water pump draws seawater into the engine cooling system where it passes through heat exchangers and coolers to remove excess heat from the engine.

When should a Detroit Diesel pump be replaced?

A pump should be replaced if it shows signs of leaking, reduced flow, worn impellers, overheating issues, or excessive noise during operation.

Are replacement pumps available for older Detroit Diesel engines?

Yes. Replacement seawater and cooling pumps are available for many classic Detroit Diesel marine engines, helping keep older vessels operating reliably.