3966520 Cummins Compatible Single Cylinder 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. By compressing intake air and delivering it to the air processing unit, it ensures the necessary pressure is maintained throughout the braking circuit. This specific model is engineered with high-strength components to withstand the rigorous thermal and mechanical stresses of heavy-duty operation.

Compatibility and engine fitment

This unit is specifically designed for compatibility with Cummins engines. It features a water-cooled design to prevent overheating during sustained heavy-load operations, making it suitable for long-haul transport and construction machinery. The integration of an ESS feature and a water-cooled valve plate enhances overall system reliability and efficiency under extreme conditions.

Technical specifications and installation

Technical specifications include a Ø85.00 mm cylinder bore and a 56 mm stroke, providing a swept volume of 318cm³. The installation requires connection to the engine cooling circuit via the 3/4" - 16 UNF water inlet and outlet ports. The air outlet port is configured as M27x2, and an M10x1 unloader port is included to manage system pressure effectively.

Maintenance and troubleshooting

Regular inspection of the air inlet (Ø25) and outlet connections is recommended to prevent leaks. Maintaining clean coolant flow through the water ports is essential for preventing thermal degradation of internal components. Consult your authorized distributor for precise fitment verification.

OE cross-reference

2500 030 002 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 3966520.