4991799 CUMMINS Single Cylinder, Air Compressor

This single cylinder air compressor is a critical component designed to provide consistent air pressure within the pneumatic braking and control systems. Engineered with a Ø85.00 mm cylinder bore and a 56 mm stroke, it delivers a swept volume of 318cm³ to maintain system integrity under demanding conditions. The water-cooled design with a Ø25 air inlet port and M27x2 outlet port ensures optimal thermal management during operation.

The 4991799 product serves as the OE equivalent of the CUMMINS air compressor used in heavy-duty commercial applications. This specific unit features a water-cooled valve plate and an ESS feature to ensure long-term reliability in the engine's pneumatic circuit. It is engineered to meet strict technical requirements for high-strength component performance.

Technicians should note the specific port dimensions, including the M10x1 air unloader port and the 3/4" - 16 UNF water inlet/outlet ports, to ensure correct installation. Regular inspections of the water cooling connections and the through-drive mechanism are recommended to maintain optimal air output and prevent system pressure drops. The 4991799 is the OE equivalent of the CUMMINS 4991799 air compressor.