3976374 Twin Cylinder Compressor for Cummins Engines

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the air brake system of heavy commercial vehicles, generating high-volume compressed air through two piston-cylinder assemblies. Designed for high-demand applications, this unit ensures rapid reservoir filling and consistent pressure for the entire pneumatic system.

Engine compatibility and fitment

This component is engineered to be compatible with Cummins engines, including the ISL, QSC8.3, QSL9, and ISC8.3 series. It provides a reliable air supply for heavy-duty vehicles requiring high air output to maintain braking performance and pneumatic system stability.

Technical specifications and ports

The unit features a water-cooled design with a water inlet and outlet port size of 3/4-16 UNF. Technical specifications include a Ø75.00 mm cylinder bore, a 56 mm stroke, and an air outlet port of M27x2. The through-drive configuration and ESS feature ensure seamless integration into existing engine architectures.

Maintenance and inspection

To maintain peak performance, technicians should regularly inspect the water inlet/outlet ports and the air unloader port (M10x1) for any signs of leaks or debris buildup. Ensuring proper coolant flow is essential for the longevity of the water-cooled valve plate.

OE cross-reference

2500 150 001 (Twin Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 3976374.