1100 255 021 Twin Cylinder, Air Compressor — MERCEDES BENZ

This twin cylinder air compressor is designed to provide consistent pneumatic pressure within the heavy commercial vehicle braking system. Featuring a robust water-cooled structure and a high-strength component build, it ensures reliable operation under demanding service conditions. The unit is engineered with a specialized water-cooled valve plate and an ESS feature to maintain optimal performance during intensive duty cycles.

1100 255 021 is the OE equivalent of the MERCEDES BENZ 457 130 55 15 SP1 and 457 130 72 15 SP1 twin cylinder air compressor used in MERCEDES BENZ systems. This component is also compatible with WABCO hardware including parts 912 510 105 0 SP1 and 912 510 201 0 SP1. It is essential for maintaining the pneumatic integrity of heavy-duty vehicle air brake systems.

Workshop technicians should note that this part is a water-cooled (W) type, featuring specific port dimensions for inlet and outlet to ensure precise assembly. The M26x1,5 air inlet and outlet ports, along with the M16x1,5 water ports, must be correctly aligned during installation to prevent leaks. Regular maintenance of the cooling system and checking the unloader port connections are recommended to ensure long-term durability in heavy-duty transport applications.