21974078 Compatible Volvo FMX III 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 block and the radiator. By maintaining consistent fluid flow, it prevents engine overheating and ensures stable operating temperatures during intensive heavy-duty operations.

Compatible Volvo models and engines

This component is specifically designed for compatibility with Volvo FMX III models, including 330, 370, 380, 410, 430, 450, and 460 variants. It is also suitable for Volvo FM series trucks such as the FM 330, FM 370, FM 410, FM 450, and compatible with Volvo FMX and FMX II series engines. Check the compatibility list.

Installation and maintenance

For optimal performance, technicians should inspect the pump housing and impeller during routine cooling system maintenance. When replacing the pump, it is recommended to check the condition of the drive belts and gaskets to prevent future leaks or bearing play issues. This part is built with high-strength components to withstand rigorous thermal cycles.

Troubleshooting cooling issues

Monitoring for signs such as coolant leaks from the weep hole or unusual mechanical noise can help identify early signs of failure. Regular inspection ensures the longevity of the entire cooling circuit in heavy commercial vehicles.

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 21974078.