20921947 Compatible Water Pump — Volvo FMX III

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 to prevent overheating. It is manufactured using high-strength components to withstand the intense thermal and mechanical stresses encountered in heavy-duty commercial engine environments.

Compatible vehicles and engines

This component is specifically designed for Volvo FMX III models, including the 330, 370, 380, 410, 430, 450, and 460 variants. It is also compatible with Volvo FM series trucks and other FMX generations to ensure reliable engine temperature regulation.

Installation and maintenance

For optimal performance and longevity, technicians should inspect the pump during routine belt service. It is recommended to check for signs of coolant leakage from the weep hole or unusual bearing noise to prevent engine overheating. Ensure all mounting surfaces are clean before installation to maintain a proper seal.

Troubleshooting and selection

Selecting a high-quality replacement helps maintain system integrity and prevents costly downtime for fleet managers and workshop technicians.

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 20921947.