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SKU:
NLT2S01145
Ships for free in 2–4 business days.
M71 M70 Cummins 4B Engines Diesel Raw Water Pump Replaces 3907458 3912019
$358.39
In Stock
$358.39
Sale price
$358.39
Regular price
This marine raw-water pump is designed to replace part number #3907458 for Cummins 4B-series marine diesel installations that use water pump numbers 3907458 or 3912019. It draws seawater through the raw-water cooling circuit to remove heat from the engine.
Estimated delivery between
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Cummins 4B3.9M marine diesel
- Cummins 4BT3.9M marine diesel
- Cummins 4BTA3.9M marine diesel
- Cummins 6B5.9M / 6BT5.9M marine installations, where pump number matches
Product Overview
The marine raw-water pump draws seawater through the raw-water cooling circuit to remove heat from the engine. Poor raw-water flow, leaking seals or a damaged impeller can lead to overheating.
Confirm pump casting, pulley or gear-drive arrangement, hose fittings and engine installation; marine raw-water pumps differ from freshwater coolant pumps.
Key Features & Performance
- Marine raw-water pump for the application described above
- Draws seawater through the raw-water cooling circuit to remove heat from the engine
- Confirm pump casting, pulley or gear-drive arrangement, hose fittings and engine installation; marine raw-water pumps differ from freshwater coolant pumps.
- Reference numbers: 3907458, 3912019, JPR-C1025
Replaces / Cross-References
- 3907458
- 3912019
- JPR-C1025
What Is Included
1 component or assembly as pictured. Verify included accessories, gaskets and fasteners against the product photos.
Fitment Notes
Confirm pump casting, pulley or gear-drive arrangement, hose fittings and engine installation; marine raw-water pumps differ from freshwater coolant pumps.
Frequently Asked Questions
When should this part be replaced? Poor raw-water flow, leaking seals or a damaged impeller can lead to overheating.
Is this a genuine OEM part? No. This listing describes an aftermarket replacement or accessory unless explicitly identified as genuine OEM. Manufacturer names and OE numbers identify the intended application.
How do I verify fitment? Confirm pump casting, pulley or gear-drive arrangement, hose fittings and engine installation; marine raw-water pumps differ from freshwater coolant pumps.
Part Summary
Keywords: Marine raw-water pump, Cummins 4B3.9M marine diesel, Cummins 4BT3.9M marine diesel, Cummins 4BTA3.9M marine diesel, 3907458, 3912019, JPR-C1025.
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.