20451516 Volvo FH Water Pump

What does a water pump do?

The water pump serves as a critical centrifugal-type component within the engine cooling system, continuously circulating coolant between the engine block, cylinder head, and radiator. This ensures that the engine maintains stable operating temperatures even under heavy-duty loads.

Vehicle compatibility and fitment

This specific component is designed for Volvo FH models, including variants such as the 440, 480, 500, 520, and 400. It is engineered to meet the rigorous demands of heavy commercial vehicle applications.

Maintenance and replacement guidance

To ensure optimal performance, technicians should inspect the pump during regular cooling system maintenance or when servicing the timing belt. Signs of wear include coolant leakage from the weep hole or unusual bearing noise.

Troubleshooting and inspection

Replacing the unit during routine belt service helps prevent overheating and ensures long-term engine reliability in demanding environments.

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 20451516.