20713954 Volvo FH12 Water Pump

What does a water pump do?

The water pump serves as a critical component within the engine cooling system, acting as a centrifugal pump that continuously circulates coolant between the engine block, cylinder head, and radiator. By maintaining constant fluid movement, it prevents overheating and ensures stable thermal management during long service hours in heavy commercial vehicle operations.

Vehicle compatibility and fitment

This specific component is designed to fit Volvo FH12 models, including the FH 12/340, FH 12/380, FH 12/420, FH 12/500, FH 12/460, FH 12/390, and FH 12/430. It functions reliably within the high-load environments typical of truck and tractor unit engines.

Maintenance and inspection guidance

For optimal maintenance, technicians should inspect the pump for signs of coolant leakage from the weep hole or unusual bearing noise. It is recommended to inspect or renew this component during scheduled timing belt or alternator belt service intervals to prevent sudden engine overheating.

Troubleshooting and selection

When selecting replacement parts, ensure compatibility with the specific engine requirements of the FH12 series to maintain system integrity and prevent cavitation or bearing play issues.

OE cross-reference

525.03.0003 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20713954.