21648708 Compatible Water Pump — Volvo FMX

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 fluid flow, it prevents overheating and protects engine components from thermal stress during heavy-duty operations.

Compatible vehicles and engines

This part is designed specifically for Volvo FMX models including the 380, 420, 460, and 500 variants equipped with D11B engines. It is also compatible with Volvo FM series trucks such as the FM 380, FM 420, FM 460, and FM 500. Consult your authorized distributor.

Maintenance and inspection

When performing engine maintenance, it is recommended to inspect the pump for signs of coolant leakage from the weep hole or abnormal bearing noise. Replacing the pump during timing belt or alternator belt service intervals helps prevent unexpected downtime in heavy commercial vehicles.

Troubleshooting and selection

Maintaining proper coolant levels and checking for impeller play can extend the service life of this component. This unit is built with high-strength components to withstand the rigorous demands of construction machinery and truck engines.

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 21648708.