20921917 Volvo FM III Compatible 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 to prevent overheating. Built with high-strength components, it is designed to withstand the rigorous thermal cycles and mechanical stresses typical of heavy commercial vehicle operations.

Vehicle and engine compatibility

This specific unit is compatible with Volvo FM III models including 380, 460, 430, and 330 variants. It is also fitted to Volvo FM II and Volvo FM series trucks such as the FM 330, FM 450, FM 410, and FM 370. These parts are essential for maintaining the thermal balance of the engine during long-haul or construction tasks.

Installation and maintenance guidance

For optimal performance, technicians should inspect the pump during every coolant system service. Monitoring for signs such as coolant leakage from the weep hole or unusual bearing noise can prevent unexpected engine downtime. When replacing this unit, it is recommended to check the condition of the drive belts simultaneously.

Troubleshooting and service tips

Consult your authorized distributor for further information on fitment and maintenance intervals.

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.