4059825 CUMMINS M11 Single Cylinder Air Compressor

This single cylinder air compressor is engineered to provide consistent pneumatic pressure within the engine system of heavy commercial vehicles. Designed with a focus on durability, the unit features a cylinder bore of Ø85.00 mm and a stroke of 56 mm, delivering a swept volume of 318cm³. The water-cooled design ensures optimal temperature regulation during high-load operations, making it a reliable component for long-haul transport applications.

4059825 is the OE-equivalent of the CUMMINS 4059825 single cylinder air compressor used in the CUMMINS M11 engine series. This part is specifically engineered to meet the rigorous demands of the heavy-duty commercial vehicle sector, ensuring seamless integration with existing engine architectures. It serves as a direct replacement to maintain optimal system pressure and performance in professional workshop environments.

The assembly process for this component requires technical precision, particularly regarding the water inlet and outlet ports (3/4" - 16 UNF) to ensure proper cooling. Workshop technicians should verify the through-drive compatibility and ensure the air unloader port (M10x1) and outlet port (M27x2) are properly seated. Regular maintenance and inspection of the water-cooled valve plate are recommended to prevent system downtime in heavy-duty fleets.

By utilizing high-strength components, this air compressor maintains its functional integrity even under extreme thermal stress. The inclusion of the ESS feature and robust water-cooling interfaces provides an added layer of operational stability. This makes it an ideal choice for fleet managers and specialized technicians looking for precise OEM-standard compatibility.