General description Air spring for the rear of Mercedes Benz M-Class W164, designed for direct replacement. This air suspension bag is engineered to provide optimal performance and convenience, ensuring your vehicle maintains a level stance while towing or hauling. It prevents rear sagging, bottoming out, and excessive pressure on tires. Technical specifications Reference OE/OEM Numbers: A 164 320 02 25; 1643200225; A 166 320 03 25; 1663200325; A 164 320 04 25; 1643200425; A 164 320 06 25; 1643200625; A 164 320 07 25; 1643200725; A 164 320 08 25; 1643200825; A 164 320 09 25; 1643200925; A 164 320 10 25; 1643201025; A 166 320 03 25; 1663200325; A 166 320 06 25; 1663200625 Applications: Mercedes Benz GL320 (Rear 2007 - 2009), GL350 (Rear 2010 - 2012), GL450 (Rear 2007 - 2012), GL550 (Rear 2008 - 2012), ML320 (Rear 2007 - 2009), ML350 (Rear 2006 - 2011), ML450 (Rear 2010 - 2011), ML500 (Rear 2006 - 2007), ML550 (Rear 2008 - 2011), ML63 AMG (Rear 2007 - 2011) Stroke: 140mm ± 25mm