21648712 Volvo FMX II Water Pump

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 engine overheating and ensures stable operating temperatures under heavy-duty workloads.

Compatible Volvo vehicle models

This component is specifically designed for Volvo FMX II, FMX, and FM series vehicles. It provides precise fitment for various configurations including the FM 330, FM 450, FM 410, and FM 370 models, as well as FMX variants like the 410 and 330. It is compatible with Volvo OE systems.

Installation and maintenance guidance

For optimal performance and longevity, technicians should inspect the pump during routine belt service intervals. When replacing this component, it is recommended to check the integrity of the mounting surfaces and ensure all seals are correctly seated to prevent leaks from the weep hole or housing.

Troubleshooting common issues

Monitoring for signs such as unusual bearing noise or visible coolant leakage is essential for preventing sudden engine failure in heavy commercial vehicle applications.

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 21648712.