20995158 Water Pump for Volvo FH Engines

What does a water pump do?

This water pump is a critical component of the engine cooling system, designed to circulate coolant between the engine block and the radiator. By maintaining steady flow, it prevents overheating and ensures the engine operates within its ideal temperature range, which is vital for long-term engine durability under high loads.

Compatible Volvo engines and models

This unit is specifically compatible with Volvo FH models, including the 400, 440, 480, 500, and 520 variants. It is also engineered to fit Volvo FH13 engines equipped with the D13B engine code. These heavy commercial vehicle applications require high-strength components to withstand continuous thermal stress.

Installation and maintenance

For optimal performance, technicians should inspect the pump during routine belt service. Check for signs of coolant leakage from the weep hole or unusual bearing noise. Proper installation ensures the impeller maintains the necessary flow rate for heavy-duty operation.

Troubleshooting and selection

Maintaining a robust cooling system helps prevent serious engine damage caused by thermal fluctuations. Always verify compatibility with specific engine codes before installation to ensure a precise fit within the cooling circuit.

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.