1400 040 002 KNORR-BREMSE Twin Cylinder, Air Compressor

The heavy-duty twin cylinder air compressor is a critical component designed to provide consistent pneumatic pressure within the braking system. Engineered with high-strength components, this unit features a Ø75.00 mm cylinder bore and a 50 mm stroke to ensure efficient air displacement. The integrated water-cooling system, utilizing M18x1,5 inlet and outlet ports, helps manage thermal loads during intense operation, maintaining stability in various working conditions.

1400 040 002 is the OE-equivalent of the KNORR-BREMSE 1189106, KZ642, KZ642/2RM, and KZ642/2X50 twin cylinder air compressors used in SCANIA and KNORR-BREMSE systems. This part is also compatible with Scania reference numbers 1348919, 1300366, 130 even 10571185 and 394441. It is specifically engineered to meet the rigorous demands of heavy commercial vehicles including trucks and buses.

Workshop technicians should ensure that the water-cooling connections are properly seated using the M18x1,5 ports to prevent overheating. The unit features an M12x1,5 air unloader port and is compatible with existing ESS features. Regular inspection of the through-drive mechanism and the water-cooled valve plate is recommended to maintain optimal system pressure and service life during routine maintenance cycles.

This component is manufactured to ensure seamless integration with existing air brake architectures. By providing precise swept volume performance of 440cm³, it maintains the required pneumatic integrity for heavy commercial vehicle fleets.