21280077 Volvo FM 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 and the radiator. By maintaining consistent flow, it ensures the engine operates at its ideal temperature even under high loads. Built with high-strength components, it is designed to withstand the rigorous thermal and mechanical demands of heavy-duty commercial service.

Compatible vehicles and engines

This specific unit is engineered for Volvo FM series trucks, including models such as the FM 300, FM 340, FM 360, FM 380, FM 390, FM 400, FM 430, FM 440, and FM 480. It is also compatible with Volvo FM13 engines featuring the D13B engine code. Ensuring correct fitment for your specific engine code is essential for maintaining system integrity.

Installation and maintenance

For professional technicians and fleet managers, it is recommended to inspect the pump during routine belt service. Signs of failure often include coolant leakage from the weep hole or unusual bearing noise. When replacing this component, ensuring the mounting surfaces are clean and using high-quality gaskets is vital for preventing future leaks.

Troubleshooting guidance

Regular maintenance of the cooling circuit helps prevent overheating and protects the engine from serious damage. Consult your authorized distributor to confirm compatibility with your specific chassis and engine configuration.

OE cross-reference

525.03.0020 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21280077.