3949098 Cummins Compatible Single Cylinder Compressor

What does a single cylinder compressor do?

This single cylinder air brake compressor serves as a critical component within the pneumatic system of heavy commercial vehicles. It functions by compressing intake air to supply the air processing unit and subsequent storage tanks, ensuring the necessary pressure for reliable braking performance. This unit is built with high-strength components to withstand demanding operating conditions in heavy-duty environments.

Compatibility and technical specifications

This specific model is designed for compatibility with Cummins engines and their associated pneumatic architectures. It features a water-cooled design to manage thermal loads effectively during continuous operation. The unit includes an integrated unloader port (M10x1) and an air outlet port (M27x2) to facilitate seamless integration into existing engine configurations.

Installation and maintenance guidance

For workshop technicians, installation requires careful attention to the water inlet and outlet ports (3/4" - 16 UNF) to prevent leaks in the cooling circuit. Maintaining proper coolant flow and checking the water-cooled valve plate ensures long-term reliability. Regular inspection of the air inlet port (Ø25) and the through drive mechanism is recommended to prevent system pressure drops.

Troubleshooting and system performance

Monitoring air production rates and checking for excessive oil carryover can help diagnose potential issues before they impact vehicle braking performance. This compressor is an essential replacement part for maintaining fleet uptime.

OE cross-reference

2500 030 002 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 3949098.