85000957 Volvo FMX II Cooling System 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 steady thermal regulation, it prevents engine overheating during intensive heavy-duty operations. Built with high-strength components, this unit is engineered to withstand the rigorous thermal and mechanical stresses found in construction machinery and heavy trucks.

Compatible Volvo models

The part is specifically designed for compatibility with Volvo FMX II models, including 380, 420, 460, 500, and 540 variants. It is also fitted to a wide range of Volvo FM trucks such as the FM 360, 380, 400, 420, 440, 460, 480, and 500 models. This ensures consistent performance across various heavy commercial vehicle configurations.

Maintenance and replacement guidance

To ensure optimal system health, technicians should inspect the pump during routine belt service. Common indicators for replacement include visible coolant leakage from the weep hole or unusual bearing noise. Replacing this component alongside related cooling system parts helps prevent unplanned downtime in fleet operations.

Troubleshooting and selection

Maintaining the cooling system integrity is vital for engine longevity. When selecting a replacement, verify that the unit matches the specific engine requirements of your Volvo truck to ensure precise flow rates and seal integrity.

OE cross-reference

525.03.0008 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 85000957.