4991799 Cummins Compatible QSC8.3 Compressor

What does a single cylinder compressor do?

This single cylinder air brake compressor serves as a critical component within the pneumatic braking system of heavy commercial vehicles. By utilizing a piston-driven mechanism, it compresses intake air to provide the necessary pressure for the air processing unit and storage tanks. Built with high-strength components, this unit is engineered to withstand the rigorous thermal and mechanical demands of engine-driven operation.

Engine compatibility and technical fitment

This specific model is engineered for compatibility with Cummins engines, providing a reliable alternative for fleet maintenance and repairs. The unit features a water-cooled configuration with 3/4" - 16 UNF inlet and outlet ports, ensuring efficient thermal management during continuous operation.

Installation and maintenance guidance

For proper installation, technicians should verify the M27x2 air outlet port and M10x1 unloader port alignment. Given the water-cooled valve plate and ESS feature, ensuring clean coolant flow through the 3/4" - 16 UNF ports is essential for maintaining optimal performance and preventing overheating during high-load cycles.

Troubleshooting and system performance

Regular inspection of the 56 mm stroke movement and air inlet integrity helps prevent system pressure drops. Consult your authorized distributor.

OE cross-reference

2500 030 002 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 4991799.