3968696 Single Cylinder Air Compressor for Cummins

What does a single cylinder compressor do?

This single cylinder air brake compressor serves as a vital component within the pneumatic braking system of heavy commercial vehicles. By utilizing a piston-type mechanism, it compresses intake air to supply the air processing unit and subsequent storage tanks. The unit is engineered with high-strength components to withstand the rigorous thermal and mechanical stresses encountered during heavy-duty operation.

Engine compatibility and fitment

This specific model is designed to be compatible with Cummins engines, specifically the ISBe, ISDe, and ISLe series. It features a water-cooled architecture to maintain optimal operating temperatures during sustained use, ensuring consistent air pressure delivery for the vehicle's braking performance.

Installation and technical specifications

For professional installation, technicians should verify the 3/4”-14 NPT air inlet and outlet ports, as well as the 1/2”-14 NPT water inlet and outlet ports. This unit includes an ESS feature and through drive capability to ensure seamless integration with the engine's drive configuration.

Maintenance and troubleshooting

Regular inspection of the air unloader port (M10x1) and cooling lines is recommended to prevent pressure fluctuations or overheating. Maintaining clean water flow through the cooling circuit is essential for long-term reliability in heavy commercial vehicle service.

OE cross-reference

2500 040 007 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 3968696.