20431135 Volvo FH12 D12C 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 block and the radiator. In heavy commercial vehicle engines, this centrifugal-type pump ensures that operating temperatures remain within safe limits, preventing overheating during continuous operation.

Vehicle and engine compatibility

This specific unit is designed for Volvo FH12 trucks, specifically for those equipped with D12C engines, including variants such as the FH 12/340, 380, 390, 420, 430, 460, and 500. It provides a reliable replacement for original equipment to maintain optimal thermal management in your fleet.

Installation and maintenance

When replacing this component, it is recommended to inspect the drive belt and associated seals to ensure system integrity. Proper installation is vital to prevent leaks from the weep hole or bearing play that could lead to premature failure of the cooling circuit.

Troubleshooting guidance

Consult your authorized distributor to confirm exact fitment for your specific engine configuration and to ensure seamless integration with existing cooling system components.

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 20431135.