A4127040040SP1 Mercedes-Benz Compatible Single Cylinder Compressor

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 an engine-driven mechanism, it compresses intake air to provide the necessary pressure for the air processing unit and storage tanks. This specific model is designed with a water-cooled configuration to ensure stable operation under heavy-duty thermal loads.

Technical specifications and compatibility

This component is compatible with Mercedes-Benz vehicles. It features a single-piston structure with a Ø85.00 mm cylinder bore and a 42 mm stroke, delivering a swept volume of 238cm³. The unit is equipped with an M26x1,5 air inlet port, an Ø30 air outlet port, and M14x1,5 ports for water inlet and outlet connections.

Installation and maintenance guidance

For proper installation and maintenance, technicians should verify the water cooling connections and ensure the M14x1,5 ports are correctly seated to prevent leaks. Regular inspection of the water jacket and intake ports is essential to maintain optimal compression efficiency and prevent overheating during long-haul operations.

Selection and troubleshooting

Ensuring correct fitment involves checking the drive type and cooling requirements against the vehicle's technical specifications. Consult your authorized distributor for further assistance.

OE cross-reference

1100 040 021 (Single Cylinder Compressor) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number A4127040040SP1.