5257939 CUMMINS ISBE4.5 Twin Cylinder Air Compressor

The heavy-duty twin cylinder air compressor is a critical component in the pneumatic system of heavy commercial vehicles, responsible for maintaining consistent air pressure. This unit is engineered with high-strength components to withstand rigorous industrial environments, featuring a robust water-cooled design to manage thermal loads effectively during operation.

5257939 is the OE-equivalent of the CUMMINS 5257939 air compressor used in the CUMMINS ISBE4 and ISBE4.5 engine series. This precision-engineered part ensures seamless integration with the engine's air system, providing the necessary volume and pressure required for heavy-duty braking and pneumatic functions.

Designed for workshop technicians and fleet managers, this compressor features a dual-cylinder configuration with a 460cm³ swept volume and specialized M26x1,5 ports for air inlet and outlet. The water-cooled architecture utilizes M16x1,5 connections to ensure optimal temperature regulation. Proper installation and regular maintenance of the cooling passages are essential to maintain peak performance and prevent overheating in demanding service environments.