21218878 Volvo B9TL D9B Water Pump

This water pump serves as a critical component within the engine cooling system, responsible for circulating coolant between the engine block and the radiator. By maintaining constant flow, it prevents overheating and ensures the engine operates within its intended thermal range, even under heavy commercial vehicle workloads.

This specific unit is designed for Volvo B9TL vehicles powered by D9B engines. It provides a reliable solution for maintaining thermal stability in bus and heavy-duty applications. The part is engineered to withstand high temperatures and vibrations encountered during long service hours in demanding environments.

For optimal performance, technicians should inspect the pump during routine belt or timing belt service. It is recommended to check for coolant leaks from the weep hole or unusual bearing noise, which may indicate the need for replacement to prevent system failure.

Check the compatibility list to ensure this part meets your specific engine requirements.

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 21218878.