21284318 Volvo FMX 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 and the radiator. Built with high-strength components, it is engineered to withstand the demanding thermal cycles and mechanical stresses found in heavy commercial vehicle engines.

Compatible Volvo vehicles

This part is specifically designed for Volvo FMX models including 380, 420, 460, and 500 variants, as well as Volvo FM series such as the FM 380, FM 420, FM 460, and FM 500. It provides a reliable replacement for original equipment requirements in these heavy-duty truck applications.

Maintenance and installation

For optimal performance and to prevent engine overheating, technicians should inspect the pump during routine belt service. Monitoring for signs such as coolant leaks from the weep hole or unusual bearing noise is essential for preventative maintenance. When replacing this unit, it is recommended to check the condition of the drive belts and seals simultaneously.

Troubleshooting and selection

Selecting a high-quality replacement ensures that the cooling system maintains stable operating temperatures even under heavy loads in construction or long-haul transport environments.

OE cross-reference

525.03.0005 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21284318.