Included in this Air Lift combo kit is a complete AutoPilot digital air management system that includes everything you need to control the air pressure in the air struts / springs.  The AutoPilot gives you one touch ride height control through the use of a digital display controller and electronic solenoid valves. This is the simplest of the Air Lift air management systems to install, requires only one wire to run to the dash of the vehicle from the solenoid manifolds to the controller. The advanced controller will let you control the auto ride height on the start of the car, individual wheel control, has all inflate/deflate buttons, digital voltmeter, and auto leak detection. Also included is heavy duty compressor and 5 gallon tank that power the air along with required hardware and hoses.