85003125 Water Pump for Volvo FMX II Engines

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 constant fluid flow, it prevents engine overheating and ensures stable thermal management during heavy-duty operations. High-strength components are used to withstand the rigorous thermal and mechanical stresses encountered in commercial vehicle engines.

Compatible Volvo vehicles and engines

This part is specifically designed for compatibility with Volvo FMX II models including 460, 330, 420, 500, 540, 370, 520, 430, 400, 440, 480, and 380 variants. It is also fitted to Volvo FM series engines such as the FM 480, FM 440, FM 380, FM 340, FM 300, FM 400, FM 360, FM 390, and FM 430. Additionally, it supports various Volvo FMX configurations like the FMX 480, 440, and 400 models.

Installation and maintenance guidance

For optimal performance, technicians should inspect the pump and its associated belts during routine cooling system maintenance. When replacing the pump, it is recommended to check the condition of the mechanical seals and gaskets to prevent future leaks. Ensuring proper alignment during installation helps prevent premature bearing wear and maintains steady coolant flow rates.

Troubleshooting cooling system components

If you observe coolant leaking from the weep hole or hear unusual noise during engine operation, a thorough inspection of the pump assembly is required. Maintaining this component is vital for the longevity of heavy commercial vehicle engines. Check the compatibility list.

OE cross-reference

525.03.0006 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 85003125.