21284318 Volvo FM Compatible Water Pump

What does a water pump do?

This water pump is a critical component of the engine cooling system, responsible for circulating coolant between the engine and the radiator. By maintaining consistent fluid flow, it prevents engine overheating and ensures stable thermal management during heavy-duty operation.

Vehicle and engine compatibility

This specific model is compatible with Volvo FM series trucks, including the FM 380, FM 420, FM 460, and FM 500 models. It is engineered to meet the rigorous demands of heavy commercial vehicle engines used in long-haul and construction applications.

Installation and maintenance

For optimal performance, technicians should inspect the pump during regular belt service intervals. It is recommended to check for any signs of coolant leakage from the weep hole or unusual bearing noise. Replacing the pump alongside the timing or alternator belt can prevent unexpected downtime in the field.

Troubleshooting guidance

Maintaining a reliable cooling cycle is essential for engine longevity and fuel efficiency.

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.