3907458 3912019 Raw Water Pump Impeller for Cummins 4B M71 M70 Sea Engines

Product Overview

This aftermarket replacement raw water pump impeller pump is intended for Cummins 4B marine engine applications and cross-references part numbers 3907458 and 3912019. A raw water pump circulates seawater through a marine engine cooling system to support normal temperature regulation. The M71 and M70 designations identify the engine applications this pump is supplied for comparison against.

Key Features & Performance

• Raw water pump function that moves seawater through the marine engine cooling circuit
• Supplied for comparison with Cummins part numbers 3907458 and 3912019
• Intended for the Cummins 4B engine applications identified in the listing
• Used when servicing or replacing the corresponding pump on the listed engine applications

Fitment & Compatibility

• for Cummins 4B engine applications
• for M71 applications as listed
• for M70 applications as listed

Common Uses

• Replacing a worn, leaking, damaged, or malfunctioning raw water pump
• Routine maintenance of the marine engine cooling system
• Restoring normal seawater circulation after the original pump has failed

Technical Specifications

• Product Type: Raw water pump impeller pump
• Part Number(s): 3907458, 3912019
• Engine Application(s): Cummins 4B
• Model Application(s): M71, M70
• General Application: Marine engine cooling system

Frequently Asked Questions

Q: What does a raw water pump do? A: A raw water pump circulates seawater through a marine engine cooling system to help regulate operating temperature.

Q: How should fitment be verified? A: Compare the complete existing part number and the full engine model designation against the numbers and applications listed here before purchase.

This is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.