21218878 Volvo FM Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, ensuring the continuous circulation of coolant between the engine block and the radiator. By maintaining consistent flow, it helps prevent engine overheating during heavy-duty operation and high-load scenarios typical in long-haul transport.

Vehicle and engine compatibility

This specific part is engineered for compatibility with Volvo FM series vehicles, 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 specifically designed to fit Volvo FM13 engines equipped with the D13A designation.

Maintenance and installation guidance

For optimal engine longevity, workshop technicians should inspect the pump during routine belt service. It is recommended to check for signs of leakage from the weep hole or unusual bearing noise. Replacing this component alongside the timing or alternator belt is a standard maintenance practice to prevent sudden system failure.

Preventing engine overheating

Maintaining a stable cooling temperature is vital for protecting engine internals from thermal stress. Selecting a high-strength component ensures reliable performance even under the demanding conditions faced by heavy commercial vehicles.

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 21218878.