21296100 Water Pump for Volvo FMX II

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. By maintaining steady fluid movement, it prevents thermal buildup and ensures the engine operates within its optimal temperature range during heavy-duty operation.

Compatible vehicles and engines

This part is specifically compatible with Volvo FM and FMX II series trucks, including models such as the FM 390, FM 440, and FMX II 480. It is also fitted to various other Volvo FM variants like the FM 360 and FM 400, ensuring reliable performance for fleet managers and workshop technicians working on these specific heavy commercial vehicle engines.

Installation and maintenance

When performing maintenance, it is recommended to inspect the pump alongside the timing belt or alternator belt. Technicians should check for signs of coolant leakage from the weep hole or unusual bearing noise. Proper installation ensures long-term stability of the cooling circuit.

Troubleshooting and selection

Selecting a high-strength component helps avoid common issues such as cavitation or impeller erosion. For optimal results, ensure all mounting surfaces are clean during installation to maintain a perfect seal between the pump housing and the engine block.

OE cross-reference

525.03.0022 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21296100.