21814036 Volvo FMX Compatible Water Pump

What does a water pump do?

This water pump is a vital component of the engine cooling system, designed to circulate coolant between the engine and the radiator. By maintaining consistent flow, it prevents thermal stress and ensures the engine operates within safe temperature ranges during heavy-duty operation.

Vehicle and engine compatibility

This component is specifically designed for Volvo FMX models with D11K engines, including variants 380, 420, 460, and 500. It is also compatible with Volvo FM series trucks such as the FM 380, FM 420, FM 460, and FM 500 models.

Installation and maintenance

For optimal performance, technicians should inspect the pump during routine belt service. If you notice coolant leakage from the weep hole or unusual noise from the bearing, immediate replacement is recommended to avoid engine overheating. Always ensure proper alignment during installation to prevent premature wear of the internal seals.

Troubleshooting guidance

The unit is built with high-strength components to withstand the rigorous thermal and mechanical stresses found in heavy commercial vehicle 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 21814036.