3969110 Cummins Compatible QSB6.7 Compressor

What does a single cylinder compressor do?

This single cylinder air brake compressor serves as a vital component in the pneumatic braking system of heavy commercial vehicles. It functions by compressing intake air to provide the necessary pressure for the air processing unit and storage tanks, ensuring consistent braking performance. Built with high-strength components, this unit is designed to withstand demanding operating environments while maintaining stable pressure output.

Compatibility and engine fitment

This specific model is engineered to be compatible with Cummins engines and systems. It is designed for heavy-duty applications where reliable air delivery is paramount for safety and system integrity. The unit's integration ensures seamless operation within the vehicle's pneumatic architecture.

Technical specifications and installation

Technicians should note the water-cooled design, which utilizes 3/4" - 16 UNF water inlet and outlet ports to manage thermal loads effectively. The assembly features an M27x2 air outlet port, an M10x1 unloader port, and a Ø25 air inlet port. Regular inspection of the water cooling lines and the valve plate is recommended to prevent system pressure drops.

Maintenance and troubleshooting

Maintaining proper lubrication and cooling flow is essential for preventing premature wear in the piston-ring assembly. Ensuring the through-drive alignment is correct will maximize the service life of this heavy-duty component.

OE cross-reference

2500 030 002 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 3969110.