21280077 Volvo FH FH16 Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, responsible for circulating coolant between the engine and the radiator. Designed for heavy commercial vehicle applications, it is manufactured using high-strength components to withstand continuous high-temperature and high-vibration operating conditions.

Vehicle compatibility and engines

This part is specifically compatible with Volvo FH series trucks, including models 400, 440, 480, 500, and 520. It is also fitted to Volvo FH16 vehicles equipped with the D16E engine. Ensuring correct fitment is vital for maintaining stable engine temperatures during long-haul operations.

Installation and maintenance

For successful installation, technicians should inspect the mounting surfaces and ensure the drive belt is properly tensioned. It is often recommended to replace the water pump in conjunction with the timing belt or alternator belt service to prevent future downtime.

Troubleshooting guidance

If you notice coolant leaking from the weep hole or hear unusual bearing noise, it may be time to inspect the unit. Consult your authorized distributor to ensure exact compatibility with your engine code.

OE cross-reference

525.03.0020 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21280077.