21218878 Volvo FM Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, ensuring the continuous circulation of coolant between the engine and the radiator. By maintaining steady flow, it prevents overheating and protects engine components under heavy-duty operating conditions.

Vehicle and engine compatibility

This part is specifically designed for Volvo FM series trucks, including models such as the FM 480, FM 440, and FM 380. It is also compatible with Volvo FM9 models equipped with D9B engines. This ensures precise fitment for various configurations within the heavy commercial vehicle segment.

Installation and maintenance

For optimal performance, technicians should inspect the pump during routine cooling system maintenance or belt replacement. When installing, ensure all seals are correctly seated to prevent leaks and check that the impeller rotates freely without excessive noise or play.

System reliability

Maintaining a functional cooling system is vital for preventing engine thermal stress and extending the service life of the motor.

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.