21648711 Volvo FMX III Water Pump

What does a water pump do?

This water pump plays a critical role in the engine cooling system by circulating coolant between the engine and the radiator. Built with high-strength components, it ensures stable thermal management to prevent engine overheating during heavy-duty operation.

Compatible Volvo models

This component is specifically designed for Volvo FMX III models, including 380, 420, 460, 500, and 540 variants. It is also compatible with several Volvo FM series models such as the FM 360, FM 380, FM 400, FM 420, FM 440, FM 460, FM 480, and FM 500. Check the compatibility list for specific engine fitment.

Installation and maintenance

Technicians should inspect the pump during routine cooling system maintenance. Common signs of wear include coolant leakage from the weep hole or unusual bearing noise. When replacing this part, it is recommended to inspect the associated belts and gaskets to ensure complete system integrity.

Troubleshooting guidance

Maintaining a functional water pump is essential for preventing catastrophic engine failure in heavy commercial vehicles. Regular checks of the impeller and shaft stability help ensure long-term reliability in demanding environments.

OE cross-reference

525.03.0008 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21648711.