21218878 Volvo FH Water Pump

What does a water pump do?

This water pump plays a critical role in the engine cooling system by circulating coolant between the engine block and the radiator. By maintaining steady flow, it prevents overheating and protects internal engine components from thermal stress during heavy-duty operation. The unit is built with high-strength components to withstand the rigorous demands of long-haul transport.

Compatible Volvo truck models

This component is specifically engineered for Volvo trucks, including models such as the FH 440, 480, 500, 520, and the FH16 series including variants like the FH 16/540, 550, 600, 650, 700, and 750. It also fits various FH16 III configurations such as the 550, 650, and 750 models. This ensures precise fitment for diverse fleet requirements.

Maintenance and replacement guidance

For optimal performance, technicians should inspect the pump during routine belt service. Signs that a replacement might be necessary include coolant leakage from the weep hole or unusual mechanical noise during operation. Proper installation ensures the cooling system maintains stable operating temperatures under high loads.

Troubleshooting and selection

Consult your authorized distributor to ensure exact compatibility with your specific 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 21218878.