412 704 005 0 SP1 Mercedes-Benz Compatible Single Cylinder Compressor

What does a single cylinder compressor do?

This single cylinder air brake compressor serves as the primary source of compressed air for the pneumatic brake system in heavy commercial vehicles. By utilizing a high-strength component design, it ensures consistent pressure delivery from the engine to the air processing unit, maintaining critical braking performance during heavy-duty operation.

Vehicle and technical compatibility

This specific model is designed for compatibility with Mercedes-Benz vehicles. It is a water-cooled unit featuring an M26x1.5 air inlet port and M14x1.5 water inlet/outlet ports, ensuring efficient thermal management during continuous operation. The unit features an Ø85.00 mm bore and a 42 mm stroke, providing a swept volume of 238cm³ to meet demanding service requirements.

Installation and maintenance guidance

For proper maintenance, technicians should inspect the water cooling connections and the M30 air outlet port regularly to prevent leaks or overheating. Ensuring correct installation of the water ports (M14x1.5) is essential for maintaining the integrity of the cooling circuit and extending the service life of the internal piston assembly.

Troubleshooting and selection

If you experience a drop in air pressure or increased engine load, inspect this compressor for signs of wear or cooling inefficiency. Consult your authorized distributor to ensure exact fitment for your specific chassis requirements.

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 4127040050SP1.