3103403 Cummins M11 Compatible Air Compressor

What does an air compressor do?

This air compressor serves as a critical component in the pneumatic braking system of heavy commercial vehicles, converting mechanical energy into compressed air. Built with high-strength components, this single cylinder unit provides the necessary pressure required by the air processing unit and subsequent storage tanks to ensure consistent braking performance.

Engine compatibility and fitment

This specific model is compatible with Cummins engines, including the M11, N14, ISM, and QSM11 series. It is engineered to meet the rigorous demands of heavy-duty applications, ensuring reliable operation within the engine's air brake system infrastructure.

Technical specifications and installation

Technicians should note the technical specifications: it features a Ø85.00 cylinder bore, a 56 mm stroke, and a water-cooled design with 3/4" - 16 UNF inlet and outlet ports. The unit includes an ESS feature and a water-cooled valve plate to manage thermal loads during operation. During installation, verify that the M27x2 air outlet port and M10x1 unloader port are properly seated to prevent leaks.

Maintenance and troubleshooting

Regular inspection of the air inlet port (Ø25) and cooling lines is recommended to prevent system contamination or overheating.

OE cross-reference

2500 030 003 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 3103403.