20431151 Volvo NH12 D12C Engine Water Pump

What does a water pump do?

The water pump plays a critical role in the engine cooling system by circulating coolant between the engine block and the radiator. This component is engineered to withstand the continuous high-load operating conditions typical of heavy commercial vehicle engines, ensuring thermal stability during long service hours.

Vehicle and engine compatibility

This specific model is compatible with Volvo NH12 trucks featuring the D12C engine. It serves as a reliable replacement for original equipment, maintaining the precise tolerances required for efficient liquid circulation within the cooling circuit.

Installation and maintenance guidance

When performing engine maintenance, it is recommended to inspect the water pump alongside the timing belt or alternator belt. Technicians should check for signs of coolant leakage from the weep hole or unusual bearing noise to ensure system integrity.

Troubleshooting and inspection

Maintaining a functional cooling system is vital for preventing engine overheating and ensuring the longevity of the engine components.

OE cross-reference

525.03.0003 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20431151.