21030340 Volvo FH II 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, cylinder head, and radiator. By maintaining steady fluid movement, it prevents overheating and ensures the engine operates within optimal temperature ranges during heavy-duty service.

Compatible Volvo truck models

This specific unit is compatible with Volvo FH and FH II models, including variants such as the 380, 420, 460, 500, and 540. It is engineered to meet the rigorous demands of these heavy commercial vehicle engines, ensuring seamless integration with existing cooling architectures.

Maintenance and replacement guidance

For optimal performance, technicians should inspect the pump during routine belt or timing belt service. Common indicators for replacement include coolant leakage from the weep hole or unusual mechanical noise during engine operation. Ensuring proper mounting and seal integrity is vital for long-term durability.

Troubleshooting cooling issues

Maintaining a consistent coolant flow is essential for preventing thermal stress in tractor units and trucks. Consult your authorized distributor to confirm exact 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.