20995158 Water Pump for Volvo FMX D11B

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 block and the radiator. By maintaining consistent fluid flow, it prevents engine overheating and ensures thermal stability during heavy-duty operation. High-strength components are used to withstand the high-pressure and high-temperature environments typical of commercial vehicle engines.

Vehicle and engine compatibility

This part is designed for compatibility with Volvo FM models, including the FM 300, 340, 360, 380, 390, 400, 430, 440, and 480 variants. It is also fitted to Volvo FMX trucks equipped with D11B engines (including 400, 440, and 480 models). These components are essential for maintaining the thermal management of heavy commercial vehicles in demanding environments.

Installation and maintenance

To ensure correct fitment, technicians should verify that the new pump matches the existing housing dimensions and port configurations. It is recommended to inspect the mechanical seals and gaskets during installation. For optimal performance, it is best practice to replace the water pump during routine belt or cooling system maintenance to prevent unexpected failures.

Troubleshooting guidance

Regular inspection of the pump for signs of coolant leakage or unusual noise can help identify potential issues before they lead to engine overheating. Maintaining a clean cooling system helps protect the impeller and bearing assembly from premature wear.

OE cross-reference

525.03.0020 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20995158.