21218878 Compatible Volvo FM 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. By maintaining constant fluid motion, it prevents overheating and ensures the engine operates within its ideal thermal range. Using high-strength components helps maintain consistent flow even under heavy-duty service conditions.

Compatible vehicles and engines

This specific unit is designed for Volvo FM series trucks, including models such as the FM 480, FM 440, FM 380, FM 340, FM 300, FM 400, FM 360, FM 390, and FM 430. It is also compatible with Volvo FM13 engines featuring the D13B designation. This part ensures precise fitment for these specific heavy commercial vehicle applications.

Installation and maintenance

For professional technicians, it is recommended to inspect the water pump alongside the timing belt or alternator belt during routine maintenance. When replacing this component, ensure that the mounting surfaces are clean and free of corrosion to prevent future leaks or improper seating. Maintaining the integrity of the cooling system is vital for engine longevity.

Troubleshooting and inspection

If you notice symptoms such as coolant leakage from the weep hole or unusual bearing noise, it is advisable to inspect the pump immediately. Early detection of bearing wear or impeller issues can prevent more significant engine damage caused by overheating.

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.