1663200325 Pair Left & Right Rear Air Ride Suspension Spring Bag Fits for Mercedes Benz 2005-2015 X164 X166 W164 W166 GL-Class GL320 GL350 GL450 GL550 ML-CLASS ML320 ML350 ML450 ML500 ML550 ML63 AMG - Benefast

• UPC   786592869149
• Air springs are heavy duty torsion bars coiled around an axis which compress and expand to absorb motion of the wheels. They consist of several layers of metal bound together which function as a single unit. They are used in car suspension systems and are they are considered more efficient in vibration isolation than steel springs. Air springs are useful to the air suspension system of a vehicle as they offer a smooth ride and they assist in leveling. As mentioned before, it can be susceptible to damage from moisture. Extremes of hot and cold can also damage the rubber. Drivers in hot or cold climates are more likely to experience air spring failures than those in mild climates. The rubber could also be punctured by road debris. Any of these problems can cause the air spring to leak air which will make the suspension sag causing the vehicle to sit uneven or, if the leak is sever enough, the vehicle may not reach proper ride height. This Pair Air Spring Fits for the Following Vehicles: 2007-2016 Mercedes-Benz GL/GLS (X164/X166 W/ Airmatic). 2006-2015 ML/GLE (W164/W166 W/ Airmatic). For Rear Left & Right with Rotatable Cover. Customers can find the product you need accurately according to the OE number. Replacemnt part number: 1663200325, 1643200225, 1643200425, 1643200625, 1643200725, 1643200825, 1643200925, 1643201025, 1643201025,1663200625, A1643200225, A1643200425, A1643200625, A1643200725, A1643200825, A1643200925, A1643201025, A1663200325, A1663200625. Over they years though, air springs can begin to leak, and when they do they will no longer be able to hold the air pressure required to keep the vehicle riding smoothly and at a level ride height. Fortunately, we have the solution to this problem with this brand new air spring for your vehicle. If you are replacing one air spring, it is recommended that the other side be replaced as well so that you can rest assured that your Mercedes-Benz will travel many more trouble-free miles.