21280077 Volvo FMX II Compatible Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, ensuring the continuous circulation of coolant between the engine block and the radiator. By maintaining precise flow rates, it helps regulate engine temperature and prevents thermal stress in heavy-duty engines used in construction and transport applications.

Compatible Volvo models and engines

This part is designed for compatibility with Volvo FM models, including FM 300, FM 340, FM 360, FM 370, FM 380, FM 390, FM 400, FM 430, FM 440, and FM 480. It is also fitted to various Volvo FMX II variants such as the 330, 370, 380, 400, 420, 430, 440, 460, 480, 500, and 540 models. This component is essential for maintaining the operational integrity of Volvo heavy commercial vehicles.

Installation and maintenance guidance

To ensure proper installation and prevent leaks, technicians should inspect the mechanical seal and housing during assembly. It is recommended to check the drive belt tension and inspect related cooling components like the thermostat or radiator hoses during replacement to ensure optimal system performance.

Troubleshooting cooling system issues

Regular monitoring for coolant leaks from the weep hole or unusual bearing noise can help identify potential failure before it impacts engine temperature.

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.