20921917 Volvo FMX D11B Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, responsible for circulating coolant between the engine and the radiator. By maintaining consistent fluid flow, it prevents thermal buildup and ensures the engine operates within optimal temperature ranges even under heavy-duty loads.

Vehicle and engine compatibility

This component is engineered for compatibility with Volvo FMX models, including variants 330, 370, 410, 430, and 450 equipped with D11B engines. It is also fitted to several Volvo FM series models such as the FM 330, FM 370, FM 410, and FM 450.

Maintenance and inspection guidance

For optimal performance and longevity, technicians should inspect the pump during regular cooling system maintenance or when replacing belts. Monitoring for signs such as coolant leakage from the weep hole or unusual bearing noise can help prevent sudden engine overheating.

Reliability in heavy-duty use

Selecting a high-strength component ensures reliable service for heavy commercial vehicles and construction machinery. Consult your authorized distributor.

OE cross-reference

525.03.0009 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20921917.