1100 120 004 Single Cylinder Air Compressor for Mercedes-Benz

What does a single cylinder compressor do?

This single cylinder air brake compressor functions as a critical component within the pneumatic braking system of heavy commercial vehicles. By utilizing a piston-type mechanism, it compresses intake air and delivers it to the air processing unit and tanks to ensure consistent braking pressure. This specific model is designed with high-strength components to withstand the rigorous thermal and pressure demands of heavy-duty operation.

Compatibility and technical specifications

This unit is compatible with Mercedes-Benz vehicles. It features a water-cooled design to prevent overheating during continuous operation, utilizing M22x1.5 water inlet and outlet ports. The assembly includes a water-cooled valve plate and is optimized for through-drive configurations to ensure maximum reliability in demanding environments.

Installation and maintenance guidance

For proper maintenance, technicians should regularly inspect the air inlet and outlet ports (M26x1.5) and ensure the cooling system provides adequate flow through the M22x1.5 ports. Maintaining clean air filtration and checking the drive mechanism will help preserve the 292cm³ swept volume efficiency and extend the service life of the unit.

Troubleshooting and selection

If air pressure build-up is slow or the compressor exhibits unusual noise, it may indicate wear in the piston assembly or issues within the cooling circuit. Consulting your authorized distributor can help ensure correct replacement and system integrity.

OE cross-reference

1100 120 004 (Single Cylinder Compressor) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number 4751300115.