[Vehicle Compatibility] Tis air suspension shock absorber strut fit for Mercedes-Benz for S430 2003-2006, for Mercedes-Benz for S500 2003-2004 [Reference OEM Number] You can find the exact air shock absorber what you need according to the below OEM number: 2203201338, 2203202138, 2203201438, 2203202238 [Safety & Comfort] Air suspension strut assembly can absorb vibration, and maintain the stability When the car is driving on a bumpy road, maximize the ride comfort and braking performance to ease the impact of the bumpy road, and greatly reduce the possibility of passengers being injured in a physical collision if there is an unexpected situation [Durable & Stable] In terms of materials, high density rubber is used to improve compressive strength and reduce the loss of other components. At the same time, the structural design improves the bearing capacity and fatigue resistance of the industrial air spring shock absorber, providing better durability and long-term stability [Easy to install] The convenience of installation is considered in the design, and the installation can be completed by replacing the original parts. For more efficient installation, it is recommended that you complete it under the guidance of a professional