21221878 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 consistent thermal management, it prevents engine overheating and protects vital engine components during heavy-duty operations.

Compatible Volvo FM models

This part is specifically engineered to fit Volvo FM series trucks, including models such as the FM 480, FM 440, and FM 380. It is also compatible with Volvo FM 9 variants like the FM 9/340 and FM 9/380 equipped with D9B engines. This ensures precise fitment for various heavy commercial vehicle configurations.

Installation and maintenance

For optimal performance, technicians should inspect the pump during routine belt service intervals. It is recommended to check for signs of coolant leakage from the weep hole or unusual bearing noise. Proper installation ensures long-term reliability in demanding environments.

Troubleshooting guidance

Selecting a high-strength component helps prevent sudden cooling failures in fleet operations. Consult your authorized distributor to confirm specific fitment for your vehicle's engine configuration.

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 21221878.