1100 010 021 Mercedes-Benz Twin Cylinder Air Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor functions as a critical engine-driven component within the air brake system of heavy commercial vehicles. By utilizing two piston-cylinder assemblies, it provides a higher air output than single-cylinder units, ensuring that pneumatic reservoirs are filled efficiently even under high demand. This unit is designed with water-cooled technology to maintain optimal operating temperatures during continuous service.

Vehicle compatibility and technical specifications

This specific model is designed for compatibility with Mercedes-Benz vehicles and is suitable for heavy-duty applications requiring consistent air pressure. The assembly features an air inlet port of Ø30 mm and an air outlet port of M26x1.5, alongside an M12x1.5 unloader port to manage system pressure effectively. It is engineered to meet the rigorous demands of heavy commercial vehicle braking systems.

Installation and maintenance guidance

For proper installation, technicians should ensure the water inlet and outlet ports (M16x1.5) are correctly connected to the engine cooling circuit. It is essential to verify that all mounting interfaces and port locations match the original equipment requirements. Regular inspection of the water-cooled valve plate and connections is recommended to prevent pressure drops in the pneumatic circuit.

Selection and replacement advice

When replacing this unit, ensure the new component matches the existing mounting flange and drive configuration to avoid system mismatching.

OE cross-reference

1100 010 021 (Twin Cylinder Compressor) is the equivalent of the Mercedes-Benz and WABCO OE numbers. This part directly replaces Mercedes-Benz OE numbers 4571302015SP1, 4571304615SP1, 4571306615SP1. It also replaces WABCO OE numbers 9115530030SP1, 9115530070SP1.