for Mercedes Benz M ML GL Class W/X164 Front Air Suspension 1643205813 1643206013 These air suspension bags are aftermarket ones. They will replace the original Front air springs. Reference OE/OEM Number 164 320 61 13 ; 1643206113, 164 320 60 13 ; 1643206013, 164 320 59 13 ; 1643205913, 164 320 58 13 ; 1643205813, 164 320 46 13 ; 1643204613, 164 320 45 13 ; 1643204513, 164 320 44 13 ; 1643204413, 164 320 43 13 ; 1643204313, 164 320 52 13 ; 1643205213, 164 320 22 13 ; 1643202213 Applications for Mercedes-Benz GL-Class X164 2006-2016 SUV for Mercedes-Benz M-Class W164 2005-2018 SUV for Mercedes-Benz GL320 X164 vehicles with Active Dampening System and Airmatic 2007-2009 for Mercedes-Benz GL350 X164 vehicles with Active Dampening System and Airmatic 2010-2012 for Mercedes-Benz GL450 X164 vehicles with Active Dampening System and Airmatic 2007-2012 for Mercedes-Benz GL550 X164 vehicles with Active Dampening System and Airmatic 2008-2012 for Mercedes-Benz ML320 W164 vehicles with Airmatic