5286970 CUMMINS QSL9 Single Cylinder, Air Compressor

This single cylinder air compressor plays a vital role in maintaining consistent air pressure within the vehicle's pneumatic system. Designed for high-demand environments, the component utilizes high-strength components to ensure operational stability and long-term reliability. Its specialized design is optimized for integration into heavy-duty engine configurations where consistent air output is critical for system integrity.

5286970 is the OE-equivalent of the CUMMINS 5286970 single cylinder air compressor used in the CUMMINS QSL9 and QSL series. This part is engineered to meet strict technical standards, ensuring seamless compatibility with the specified engine architectures. By maintaining exact tolerances, it provides a dependable solution for workshop technicians seeking to restore original system performance.

Installation requires precision to ensure the water-cooled system functions correctly. The unit features a 3/4" - 16 UNF water inlet and outlet configuration, along with an M27x2 air outlet port. Workshop technicians should verify all port alignments and connection torque during assembly to prevent leaks. Regular maintenance of the cooling circuit and checking the M10x1 unloader port functionality is recommended to ensure optimal service life in heavy commercial vehicle applications.

The assembly is specifically built for water-cooled operation, ensuring thermal stability during high-load cycles. This single cylinder unit maintains high efficiency through its precise 318cm³ swept volume and optimized piston stroke.