21221878 Volvo FM/FMX Water Pump Equivalent

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 steady thermal regulation, it prevents engine overheating and ensures the longevity of heavy commercial vehicle components under demanding operational conditions.

Compatible Volvo models

Designed specifically for Volvo heavy-duty trucks, this part is compatible with various models including the FM series (such as FM 480, FM 440, and FM 380) and the FMX series (including FMX II and FMX III variants like the 460 LNG). It is engineered to meet the rigorous demands of construction machinery and tractor units.

Installation and maintenance

When replacing this component, technicians should inspect related parts such as the timing belt, alternator belt, and gaskets to ensure a complete system service. Maintaining correct belt tension and checking for any signs of coolant leakage around the housing is essential for preventing future system failures.

Selection guidance

Consult your authorized distributor to ensure precise fitment for your specific 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.