3976374 Twin Cylinder Compressor for Cummins

What does a twin cylinder compressor do?

This twin cylinder compressor functions as a critical engine-driven component within the air brake system of heavy commercial vehicles, generating compressed air through two piston-cylinder assemblies. It is engineered with high-strength components to ensure durability and consistent air output for demanding braking requirements.

Engine compatibility and fitment

This unit is compatible with Cummins engines, specifically the QSL9, ISC8.3, QSC8.3, and ISL series. It is designed to integrate seamlessly into the air systems of heavy-duty trucks and commercial machinery requiring high air volume.

Technical specifications and assembly

The technical configuration includes a Ø75.00 mm cylinder bore and a 56 mm stroke, providing a swept volume of 495cm³. This water-cooled assembly features an M27x2 air outlet port, an M10x1 unloader port, and 3/4-16 UNF water inlet/outlet ports. The inclusion of the ESS feature ensures optimized performance during operation.

Maintenance and troubleshooting

Maintenance should focus on inspecting the water cooling lines and ensuring the air inlet port (Ø25) remains free of debris to prevent system pressure drops.

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.