21781059 Volvo B11R D11K Water Pump

What does a water pump do?

This water pump plays a critical role in the engine cooling system by circulating coolant between the engine block and the radiator. Built with high-strength components, it is engineered to withstand the rigorous thermal demands of heavy-duty engine environments while ensuring stable temperature regulation.

Vehicle and engine compatibility

This specific component is designed to fit Volvo B11R trucks equipped with D11K engines. It serves as a reliable replacement to maintain the integrity of the cooling circuit during long-haul or heavy-duty operations. Check the compatibility list.

Installation and maintenance

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

Troubleshooting guidance

Regular inspection of the pump housing and seals helps prevent overheating issues in heavy commercial vehicles.

OE cross-reference

525.03.0009 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21781059.