21218878 Water Pump for Volvo FM Series

What does a water pump do?

This water pump plays a critical role in the engine cooling system by circulating coolant between the engine block and the radiator. By maintaining consistent fluid flow, it prevents engine overheating and ensures stable thermal management under heavy-duty operating conditions.

Compatible Volvo models and engines

This component is specifically compatible with Volvo FM series 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 designed for use in Volvo FM11 units powered by D11B engines.

Maintenance and inspection guidance

For optimal performance and longevity, technicians should inspect the pump during routine belt services. Monitoring for signs such as coolant leakage from the weep hole or unusual bearing noise can help prevent unexpected downtime in fleet operations.

System reliability

Maintaining a healthy cooling system is vital for the longevity of heavy commercial vehicle engines. Consult your authorized distributor for further information.

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.