1100 020 003 Twin Cylinder Compressor

This twin cylinder air compressor is a vital component within the pneumatic air brake system of heavy commercial vehicles, engineered to provide high air output through two piston-cylinder assemblies. By utilizing two compression strokes per revolution, this unit ensures rapid reservoir filling, making it ideal for high-demand applications such as multi-axle tractor units and heavy-duty trucks.

The 1100 020 003 is the OE equivalent of the Mercedes-Benz 4571302215 and WABCO 9115531030 air compressors used in Mercedes-Benz and WABCO systems. This specific model features a water-cooled design with an integrated ESS feature and a water-cooled valve plate to maintain optimal operating temperatures under heavy loads.

Designed for durability, this unit includes an M26x1,5 air inlet and outlet port, along with an M12x1,5 unloader port. Technicians should verify the mounting flange and all port locations during installation to ensure perfect compatibility with the engine's drive configuration. Maintaining clean coolant flow through the M16x1,5 water ports is essential for long-term reliability.

When replacing an existing unit, it is critical to match the technical specifications such as the Ø85.00mm bore and the 636cm³ swept volume to prevent system imbalances. Consult your authorized distributor for detailed fitment guidance.