20538845 Volvo FM Water Pump

What does a water pump do?

The water pump plays a critical role in the engine cooling system by circulating coolant between the engine and the radiator to maintain optimal operating temperatures. This component is essential for preventing engine overheating during heavy-duty operations in trucks and construction machinery.

Vehicle and engine compatibility

This specific water pump is compatible with Volvo FM and FM II series vehicles, including models such as the FM 480, FM 440, FM 380, and the FM II variants like the FM 500 and FM 460 LNG. It is specifically engineered to meet the requirements of these heavy commercial vehicle engines.

Installation and maintenance guidance

For optimal performance, technicians should inspect the pump during regular belt service intervals. Monitoring for signs such as coolant leakage from the weep hole or unusual bearing noise can prevent unexpected engine overheating. When replacing, ensure all seals are properly seated to maintain system pressure.

Troubleshooting and selection

Maintaining a stable coolant flow is vital for engine longevity in fleet operations. Consult your authorized distributor to verify specific fitment for your vehicle's engine configuration.

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 20538845.