20538845 Volvo FH16 D16E 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 and the radiator. By maintaining consistent fluid flow, it prevents overheating and ensures the engine operates within its optimal thermal range during heavy-duty service cycles.

Compatible Volvo engines and models

This specific model is engineered for Volvo FH and FH16 series trucks, including variants such as the 440, 480, 500, 520, and 400 models. It is specifically compatible with the D16E engine series to ensure precise fitment and performance in heavy commercial vehicle applications.

Installation and maintenance guidance

To ensure correct installation, technicians should inspect the timing belt and alternator belt during replacement. It is vital to verify compatibility using the engine code and chassis number to prevent mismatches in flange or internal diameters. Check the compatibility list to confirm fitment for your specific fleet requirements.

Troubleshooting and failure signs

Common indicators of wear include coolant leakage from the weep hole or unusual bearing noise. Regular inspection of the pump housing and mechanical seals is recommended during routine maintenance to avoid sudden overheating and potential engine damage.

OE cross-reference

525.03.0006 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20538845.