21280077 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 consistent flow, it prevents overheating and ensures the engine operates within its ideal thermal range, which is vital for the longevity of heavy commercial vehicle engines.

Compatible Volvo FH vehicles and engines

This component is specifically designed for Volvo FH models, including the 400, 440, 480, 500, and 520 variants. It is also compatible with Volvo FH13 engines utilizing the D13B engine code. Ensuring correct fitment for these specific engine configurations is essential for reliable thermal management.

Maintenance and inspection guidance

During routine maintenance, technicians should inspect the pump for signs of coolant leakage from the weep hole or unusual bearing noise. It is recommended to check the pump's condition during timing belt or alternator belt service intervals to prevent unexpected engine overheating caused by impeller wear or seal failure.

Troubleshooting and selection

For optimal performance, always verify that the replacement part matches the specific engine requirements of your Volvo truck. Maintaining a healthy cooling circuit helps prevent serious engine damage caused by improper temperature regulation.

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.