21228793 Volvo B9R D9B Water Pump

What does a water pump do?

This water pump is a vital component of the engine cooling system, responsible for circulating coolant between the engine and the radiator. By maintaining a consistent flow, it prevents engine overheating and ensures stable operating temperatures during long service hours in heavy commercial vehicle applications.

Vehicle and engine compatibility

This specific part is designed for use in Volvo B9R trucks featuring the D9B engine. It serves as a reliable replacement to maintain optimal thermal management within the vehicle's cooling circuit. This component is also fitted to Volvo vehicles.

Maintenance and installation guidance

When performing maintenance, it is recommended to inspect the 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 the integrity of the cooling system.

Troubleshooting and selection

Proper installation ensures that the impeller and mechanical seals function correctly under high temperature and vibration. For exact fitment, consult your authorized distributor.

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 21228793.