21218878 Compatible Water Pump for Volvo FH

What does a water pump do?

This water pump plays a critical role in the engine cooling system by circulating coolant between the engine and the radiator. Maintaining a steady flow of coolant is essential for regulating engine temperature and preventing thermal stress in high-performance heavy-duty engines.

Vehicle and engine compatibility

The component is specifically engineered for Volvo FH (FH4/FH5) models, providing precise fitment for various variants including 400, 440, 480, 500, and 520. It is fully compatible with the D13K engine series used in these heavy commercial vehicles.

Installation and maintenance

To ensure professional installation, technicians should inspect the mounting surfaces and the drive belt tension during replacement. It is recommended to check the integrity of the mechanical seal and housing to prevent leaks. For best results, always verify the engine code before installation.

Troubleshooting and selection

Monitoring for signs such as coolant weeping from the weep hole or unusual bearing noise can help identify when a replacement is necessary to maintain system reliability.

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.