4059825 Single Cylinder Compressor for Cummins

What does a single cylinder compressor do?

This single cylinder air brake compressor serves as a critical component in the pneumatic system of heavy commercial vehicles, providing the necessary compressed air for braking operations. Built with high-strength components, this unit is specifically engineered to handle the high-pressure demands of heavy-duty engine cycles while maintaining consistent output for the air processing unit.

Engine compatibility and fitment

This component is compatible with Cummins engines, specifically designed for N14, M11, ISM, and QSM11 models. It features a water-cooled design to prevent overheating during sustained operation, ensuring long-lasting reliability in demanding environments. The unit includes an ESS feature and a water-cooled valve plate to optimize thermal management.

Installation and maintenance guidance

For proper installation and maintenance, technicians should verify the M27x2 air outlet port and the 3/4" - 16 UNF water inlet and outlet connections. Given its 17.4 KG weight and through-drive configuration, ensure all mounting points are secure and the cooling circuit is free of obstructions to maintain optimal performance.

Maintenance and troubleshooting

Regular inspection of the air inlet port (Ø25) and unloader port (M10x1) can help prevent system leaks or pressure drops. Maintaining clean coolant flow through the water ports is essential for protecting the internal piston and ring assemblies from premature wear.

OE cross-reference

2500 030 003 (Single Cylinder Compressor) is the equivalent of the Cummins OE number. This part directly replaces Cummins OE number 4059825.