3680441 Single Cylinder Compressor for ISM Engines

What does a single cylinder compressor do?

This single cylinder air brake compressor functions as a critical component within the pneumatic braking system of heavy commercial vehicles. It operates by compressing intake air to supply the necessary pressure for the air processing unit and storage tanks. Built with high-strength components, this unit is designed to maintain consistent pressure even under demanding operational cycles.

Engine compatibility and fitment

This compressor is specifically designed for use in Cummins M11, N14, ISM, and QSM11 engines. Its design ensures precise integration within the engine's cooling circuit to prevent overheating during sustained heavy-duty operation.

Technical specifications and dimensions

Technical specifications include a cylinder bore of Ø85.00 mm, a stroke of 56 mm, and a swept volume of 318cm³. The unit features an air inlet port of Ø25, an air outlet port of M27x2, and an air unloader port of M10x1. For cooling, it utilizes water inlet and outlet ports sized at 3/4" - 16 UNF.

Maintenance and installation guidance

To ensure optimal service life, technicians should inspect the water cooling lines and unloader port regularly. Proper installation of the through-drive mechanism is essential to prevent vibration-related wear on the piston assembly.

OE cross-reference

2500 030 003 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 3680441.