3976374 Twin Cylinder Compressor for QSC8.3 Engines

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical engine-driven component within the air brake system of heavy commercial vehicles, utilizing two piston-cylinder assemblies to generate consistent compressed air. Designed for high-demand applications, it ensures efficient pressure buildup to support the pneumatic requirements of the braking system.

Engine compatibility and fitment

This unit is compatible with Cummins engines, specifically the QSC8.3, ISC8.3, ISL, and QSL9 series. It is engineered to meet the rigorous demands of heavy-duty commercial applications where reliable air output is essential for safety and performance.

Technical specifications and ports

Technical specifications include a 495cm³ swept volume with a Ø75.00 mm cylinder bore and a 56 mm stroke. This water-cooled component features an M27x2 air outlet port, M10x1 unloader port, and 3/4-16 UNF water inlet and outlet ports. The assembly includes an ESS feature and a water-cooled valve plate to manage thermal loads effectively.

Installation and maintenance guidance

For optimal performance, technicians should verify the mounting interface and connection points during installation. Regular inspection of the water cooling lines and air ports is recommended to maintain peak operational efficiency in the pneumatic system.

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.