II34840 KNORR-BREMSE Twin Cylinder, Air Compressor

The twin cylinder air compressor serves as a critical component in the pneumatic system of heavy commercial vehicles, ensuring a consistent air supply for braking and suspension operations. This high-strength component is engineered to maintain optimal pressure through robust mechanical design and efficient thermal management.

II34840 is the OE-equivalent of the KNORR-BREMSE II34840 Twin Cylinder, Air Compressor used in KNORR-BREMSE systems. This part features a cylinder bore of Ø75.00 and a 50 mm stroke, providing a swept volume of 440cm³. It is specifically designed to integrate seamlessly with heavy-duty vehicle architectures requiring reliable pneumatic output.

Workshop technicians should note that this unit is water-cooled (W) to ensure stable operating temperatures under heavy load. The assembly includes M26x1,5 ports for air inlet and outlet, alongside M16x1,5 ports for the water cooling circuit. Proper installation of the water lines is essential to prevent overheating and ensure the longevity of the valve plate and internal components.

Maintaining regular checks on the air and water connections is recommended to prevent pressure drops or thermal issues within the braking system. This part is built to meet the rigorous demands of professional fleet maintenance and heavy commercial vehicle service environments.