20734268 Volvo FH12 D12C Engine Water Pump

What does a water pump do?

This water pump plays a critical role in the engine cooling system by continuously circulating coolant between the engine block and the radiator. Built with high-strength components, it is designed to withstand the high temperatures and vibrations typical of heavy commercial vehicle operations.

Vehicle and engine compatibility

This specific unit is compatible with Volvo FH12 trucks, specifically models such as the FH 12/340, FH 12/380, FH 12/420, FH 12/500, FH 12/460, FH 12/390, and FH 12/430 featuring the D12C engine. It serves as a reliable replacement for the original equipment to maintain thermal stability.

Installation and maintenance

For professional technicians, it is recommended to inspect the pump during routine belt service. If you notice coolant leaking from the weep hole or unusual bearing noise, replacement is necessary to prevent engine overheating. Always ensure proper alignment during installation to protect the mechanical seal.

Troubleshooting guidance

Maintaining a consistent coolant flow is vital for preventing cylinder head warping and other heat-related failures in heavy-duty diesel engines.

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 20734268.