Air Suspension Compressor

Air suspension is a type of vehicle suspension powered by an electric or engine-driven air pump or compressor. 

This compressor pumps the air into flexible bellows, usually made from textile-reinforced rubber. 

Unlike a hydropneumatic suspension, which offers many similar features, air suspension does not use pressurized liquid, but pressurized air. The air pressure inflates the bellows and raises the chassis from the axle.