20921947 Volvo B11R D11K Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, facilitating the continuous circulation of coolant between the engine block and the radiator. By maintaining consistent fluid flow, it prevents engine overheating and ensures stable operating temperatures under heavy-duty service conditions.

Vehicle and engine compatibility

This specific unit is compatible with Volvo B11R vehicles equipped with D11K engines. It is engineered to meet the rigorous demands of heavy commercial vehicle operations, providing a reliable replacement for worn or failing cooling components.

Installation and maintenance

For optimal performance, technicians should inspect the pump and associated belts during routine maintenance intervals. It is recommended to check for signs of coolant leakage from the weep hole or unusual bearing noise during installation to ensure long-term system integrity.

Troubleshooting and selection

Proper selection of this water pump helps maintain the thermal balance of the D11K engine, supporting the longevity of other critical cooling system components.

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 20921947.