21781059 Water Pump for Volvo FMX

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, facilitating the continuous circulation of coolant between the engine block and the radiator. By maintaining steady fluid flow, it prevents overheating and ensures the engine operates within safe thermal limits during heavy-duty service.

Compatible Volvo models

This component is specifically designed for Volvo FMX models, including variants such as the 370, 410, 430, 450, and 330. It is also compatible with Volvo FM series trucks, including the FM 330, FM 370, FM 410, and FM 450. These units are essential for maintaining engine stability in heavy commercial vehicle applications.

Maintenance and installation

Technicians should inspect the pump during routine belt service or when signs of coolant leakage or unusual noise are detected. Proper installation ensures the integrity of the cooling circuit and prevents premature wear of other cooling system components.

Troubleshooting guidance

Consult your authorized distributor for more information.

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 21781059.