21030340 Volvo FH FH II FH 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. Engineered for durability, it utilizes high-strength components to ensure consistent thermal management during heavy-duty operations. Proper coolant circulation is vital to preventing engine overheating and ensuring long-term reliability.

Compatible Volvo models and engines

This component is specifically designed for use in Volvo FH, FH II, and FH III series trucks, including various configurations such as the 420, 460, 500, and 540 models. It is also compatible with several AERO and LNG variants within the FH III range. For precise fitment, always verify the engine code against the required specifications.

Installation and maintenance guidance

To ensure optimal performance, technicians should inspect the pump during every coolant service or belt replacement. It is recommended to check for signs of leakage from the weep hole or unusual bearing noise. Replacing the pump alongside timing or alternator belts can prevent unexpected downtime in heavy commercial vehicle fleets.

Troubleshooting and service tips

Maintaining a stable cooling temperature is essential for engine longevity in heavy commercial vehicles. Consult your authorized distributor to confirm exact application details.

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.