21468471 Volvo FMX and FM 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 ensuring consistent flow, it helps maintain stable operating temperatures and prevents engine overheating during heavy-duty operation.

Vehicle and engine compatibility

This component is specifically fitted to Volvo FM models, including the FM 300, 340, 360, 380, 390, 400, 430, and 480 variants. It is also compatible with Volvo FMX 400, 440, and 480 trucks. These parts are engineered to withstand the rigorous thermal cycles experienced in heavy commercial vehicle engines.

Installation and maintenance

To ensure proper installation, technicians should inspect the mounting flange and check for any signs of bearing play or shaft movement. It is recommended to replace the water pump during routine timing belt or alternator belt service intervals to prevent unexpected failures in the cooling circuit.

Troubleshooting guidance

Monitoring for coolant leaks near the weep hole or unusual mechanical noise can help identify early signs of wear in the internal bearings or mechanical seals.

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 21468471.