3966520 CUMMINS ISC Single Cylinder, Air Compressor

This single cylinder air compressor serves as a critical component in the engine management system of heavy commercial vehicles. Designed to provide consistent pneumatic pressure, the unit features a robust build quality to withstand demanding operational environments. Its primary function is to ensure the continuous supply of compressed air required for auxiliary braking systems and engine-related pneumatic functions.

3966520 is the OE equivalent of the CUMMINS 3966520 Single Cylinder, Air Compressor used in the CUMMINS ISC engine series. This high-strength component is engineered to meet precise technical specifications, ensuring seamless integration with existing engine architectures. By maintaining strict adherence to OEM standards, it provides reliable-duty performance for workshop technicians and fleet managers alike.

The technical configuration includes a Ø85.00 cylinder bore and a 56 mm stroke, optimized for the CUMMINS ISC engine environment. The unit utilizes water cooling (W) via 3/4" - 16 UNF inlet and outlet ports to manage thermal loads effectively during long-haul operations. Technicians should ensure that the water-cooled valve plate and port connections are inspected regularly to maintain optimal air delivery.

When performing maintenance or repairs on heavy-duty air brake systems, utilizing components with precise dimensions like the M27x2 air outlet and M10x1 unloader port ensures proper fitment. This prevents pressure leaks and maintains the integrity of the pneumatic circuit within the vehicle's breathing system.