21941086 Volvo FMX II Cooling System 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 block and the radiator. By maintaining steady thermal management, it prevents engine overheating during heavy-duty operations in construction and transport environments.

Vehicle compatibility and fitment

This component is specifically engineered for Volvo FMX II and FM series trucks, including various engine variants such as the 380, 420, 460, 500, and 540 models. It is also compatible with several Volvo FM configurations to ensure precise fitment for fleet maintenance requirements.

Maintenance and installation

Technicians should inspect the pump during routine belt service to check for signs of coolant leakage or bearing noise. Ensuring a proper seal between the pump shaft and housing is essential for preventing system pressure loss. Consult your authorized distributor for installation guidance.

System reliability

Maintaining a functional cooling system is vital for preventing cavitation and impeller erosion. Regular checks of the mechanical seals and gaskets help avoid unexpected downtime in heavy commercial vehicle fleets.

OE cross-reference

525.03.0005 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21941086.