85020085 Volvo B9R D9B Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, responsible for circulating coolant between the engine and the radiator. Built with high-strength components, it is designed to withstand the intense thermal loads and vibrations typical of heavy commercial vehicle operations.

Vehicle and engine compatibility

The unit is specifically designed for Volvo B9R trucks equipped with D9B engines. This ensures precise fitment and reliable performance for buses or tractor units utilizing this specific powertrain architecture.

Installation and maintenance guidance

To ensure optimal system longevity, technicians should inspect the pump during scheduled belt services. Checking for signs such as coolant leaks near the seal or unusual bearing noise can prevent overheating. Proper installation ensures the impeller maintains steady flow at all engine speeds.

System performance and selection

Always verify compatibility with your specific engine serial number to ensure perfect integration with existing cooling hoses and thermostat components.

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 85020085.