21812242 Volvo FMX D13C Cooling System 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 block and the radiator. By maintaining consistent fluid flow, it prevents overheating and ensures the thermal stability of the engine during intensive operation in heavy commercial vehicles.

Compatible Volvo vehicles and engines

This specific unit is engineered to be compatible with Volvo FMX models, including the 370, 410, 430, 450, and 330 variants equipped with D13C engines. It is also suitable for several Volvo FM series trucks such as the FM 330, FM 370, FM 410, and FM 450.

Installation and maintenance guidance

To ensure long-term reliability, technicians should inspect the pump for signs of coolant leakage from the weep hole or unusual bearing noise during routine maintenance. It is recommended to replace the water pump alongside the timing belt or alternator belt to prevent unexpected downtime in the field.

Troubleshooting and selection

Maintaining a robust cooling circuit is essential for preventing head gasket failure and engine wear. Selecting high-strength components ensures that the cooling cycle remains efficient even under high thermal loads common in construction machinery and heavy-duty trucks.

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 21812242.