3949718 Cummins Compatible Single Cylinder Compressor

What does a single cylinder compressor do?

This single cylinder air brake compressor is a piston-type component designed to provide the necessary compressed air for heavy commercial vehicle braking systems. By utilizing a single-piston, single-cylinder housing structure, it ensures efficient air production for the pneumatic system. This unit features a water-cooled design to prevent overheating during continuous operation, making it suitable for demanding heavy-duty environments.

Engine compatibility and technical specifications

This specific model is engineered to be compatible with Cummins engines. It features technical specifications such as a 318cm³ swept volume, an Ø85.00 mm cylinder bore, and a 56 mm stroke. The unit includes an ESS feature and a water-cooled valve plate to maintain optimal thermal management during high-pressure cycles.

Installation and maintenance guidance

For workshop technicians, installation requires careful attention to the water inlet and outlet ports, which utilize 3/4" - 16 UNF connections. The air outlet port is M27x2, and the air inlet port measures Ø25. Proper torque application on the M10x1 unloader port is essential for maintaining system integrity and preventing pressure leaks.

System performance and durability

Regular inspection of the water cooling lines and air ports is recommended to ensure consistent performance. Maintaining clean coolant flow helps preserve the life of the internal piston and ring assemblies, ensuring stable air delivery to the air processing unit.

OE cross-reference

2500 030 002 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 3949718.