21280077 Volvo FM FMX Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, facilitating the continuous circulation of coolant between the engine block and the radiator. By maintaining stable thermal management, it prevents engine overheating during intensive heavy-duty operations. Built with high-strength components, it is engineered to withstand the rigorous mechanical stresses found in commercial vehicle environments.

Compatible Volvo models

This component is specifically designed for use in Volvo FM and FMX series trucks, including various models such as the FM 300 through FM 480 and FMX variants like the 440, 480, and 540. It is also suitable for Volvo FMX III LNG models. This part ensures precise fitment for these specific heavy commercial vehicle applications.

Maintenance and inspection

For optimal performance, technicians should inspect the pump during routine cooling system service. It is recommended to check for signs of leakage or bearing noise. When performing belt replacements, evaluating the condition of the water pump is a best practice to avoid premature engine temperature fluctuations.

System importance

Maintaining a functional cooling system is vital for fleet longevity and preventing costly downtime in construction or transport operations.

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.