3801418 Volvo FM Water Pump

What does a water pump do?

This water pump plays a critical role in the engine cooling system by circulating coolant between the engine and the radiator. By maintaining a steady flow, it prevents overheating and ensures the engine operates within its optimal temperature range, even under heavy-duty service conditions.

Vehicle compatibility and engine fitment

This component is specifically designed for Volvo FM trucks, including models such as the FM 480, FM 440, FM 380, FM 340, FM 300, FM 400, FM 360, FM 390, and FM 430. It is also compatible with Volvo FM9 variants like the FM 9/340, FM 9/300, FM 9/260, and FM 9/380.

Installation and maintenance guidance

For optimal performance and to prevent system leaks or bearing noise, it is recommended to inspect the pump during routine belt services. Replacing the pump alongside the timing or alternator belt can prevent unexpected downtime in heavy commercial vehicle fleets.

Troubleshooting engine cooling

When monitoring engine temperature, technicians should check for signs of coolant leakage from the weep hole or unusual mechanical noise which may indicate internal bearing wear.

OE cross-reference

525.03.0006 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 3801418.