580 Dual Air Compressors & 5 Gallon Air Tank. Direct Replacement: Over time, the airbag springs are subjected to hard wear from the weight of the car, which then causes chronic air leakage, unstable air pressure, increased temperature in the air tank, and eventually loss of pneumatic adjustment accuracy. It meets or exceeds the OEM standard and has been tested in the factory. It is fully matched with the original car and can be installed directly. High Quality: Made of enhanced quality material with anti-rust coating on the surface, corrosion resistant, not easy to rust and long service life. With a strong compression rate and tank capacity, it can maintain a continuous pressure output to provide a stable suspension system for your vehicle, thus changing the height of the vehicle and improving driving comfort and performance, providing you with long-term stable and excellent performance. 2 – 580 Air Compressors 2 – 22″ Long Stainless Steel Braided 3/8″ Leader Hose 2 – 3/8NPT Check Valve 5 Gallon 9 Port Steel Air Tank Pressure Switch 150 psi on / 180 psi Off 2 – 40 Amp Premium Relay (As Pics Shown). Professional installation is recommended. Please check the part number and illustrations carefully to ensure that it fits your model.