3944525 Cummins Compatible QSC8.3 Compressor

What does a single cylinder compressor do?

This single cylinder air brake compressor serves as a critical component in the pneumatic braking system of heavy commercial vehicles. By utilizing an engine-driven piston mechanism, it compresses intake air to supply the air processing unit and subsequent storage tanks, ensuring consistent pressure for braking performance.

Compatibility and technical specifications

Designed for compatibility with Cummins engines, this unit features a water-cooled valve plate and includes the ESS feature for optimized operation. The technical architecture includes a 318cm³ swept volume, an Ø25 air inlet port, and specialized 3/4" - 16 UNF water inlet and outlet ports to manage thermal loads during high-duty cycles.

Installation and maintenance guidance

Maintenance technicians should regularly inspect the water cooling connections and the M27x2 outlet port to prevent leaks or pressure drops. Ensuring the integrity of the through-drive mechanism and monitoring the M10x1 unloader port is essential for maintaining system stability and preventing premature wear in the single-piston assembly.

System performance and troubleshooting

Proper installation requires verifying that all water ports are correctly seated to prevent overheating. Consult your authorized distributor for more information.

OE cross-reference

2500 030 002 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 3944525.