20744939 Volvo B13R D13B Engine Water Pump

What does a water pump do?

The water pump serves as a critical component within the engine cooling system, acting as a centrifugal-type pump that continuously circulates coolant between the engine block, cylinder head, and radiator. By ensuring a steady flow of coolant, this component prevents overheating and maintains stable thermal conditions during heavy-duty operation.

Vehicle and engine compatibility

This specific unit is designed for Volvo B13R trucks equipped with D13B engines. It provides a reliable replacement for original equipment, ensuring precise fitment and performance within the engine's cooling circuit for heavy commercial vehicle applications.

Installation and maintenance

To ensure long-term reliability, technicians should inspect the pump and its seals during routine belt or timing belt service intervals. When replacing this unit, it is recommended to check the condition of the coolant hoses and the thermostat to ensure the entire cooling system is functioning correctly.

Troubleshooting and service

Proper maintenance helps prevent common failure symptoms such as coolant leakage or unusual noise from the bearing assembly, protecting the engine from thermal stress.

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 20744939.