21030340 Volvo FH D11K Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, responsible for circulating coolant between the engine block and the radiator. By maintaining consistent fluid flow, it prevents overheating and ensures the engine operates within its designed thermal parameters under heavy-duty service conditions.

Vehicle and engine compatibility

This component is specifically engineered for Volvo FH (FH4/FH5) models equipped with D11K engines, including various variants such as the 420, 460, 500, and 540 models. It is a reliable replacement for Volvo OE equipment, ensuring precise fitment and performance in heavy commercial vehicle applications.

Maintenance and installation

When performing engine maintenance, it is recommended to inspect the water pump alongside the timing belt or alternator belt. Technicians should check for signs of coolant leakage or bearing noise during routine service intervals to prevent system failure.

Troubleshooting and selection

For professional workshop technicians and fleet managers, selecting a high-strength component ensures long-term reliability in demanding environments. Check the compatibility list to confirm fitment for your specific engine configuration.

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 21030340.