3966520 Cummins Compatible Single Cylinder Compressor

What does a single cylinder compressor do?

This single cylinder air compressor serves as the critical first link in the pneumatic braking system of heavy commercial vehicles. By utilizing a piston-type mechanism, it compresses intake air to supply the air processing units and storage tanks. This specific model is engineered with high-strength components to withstand continuous heavy-duty operating conditions without compromising pressure stability.

Compatibility and engine fitment

This component is compatible with Cummins engines and is designed to integrate seamlessly into existing air brake architectures. The unit features a water-cooled valve plate and an integrated ESS feature to maintain optimal thermal management during operation. It is specifically engineered to meet the rigorous demands of heavy commercial vehicle engine systems.

Installation and technical maintenance

For proper installation, technicians should verify the M27x2 air outlet port and the 3/4" - 16 UNF water inlet/outlet ports to ensure leak-free connections. Given the 19.5 KG weight and through-drive configuration, secure mounting is essential to prevent vibration-induced wear on the internal piston and ring assemblies.

Troubleshooting and system care

Regular inspection of the water cooling lines and the M10x1 unloader port is recommended to maintain peak efficiency. If air pressure build-up slows or leaks are detected at the ports, a thorough system check is advised to prevent brake performance degradation.

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.