AS 2450 REMANUFACTURED FRONT AIR SHOCK (W/ADS) for 2007-2012 (W164 w/ AIRMATIC) GL-CLASS Arnott is pleased to offer our completely rebuilt, OE front air shocks for the Mercedes-Benz GL-Class. Our shock features a new rubber air spring bladder manufactured by Continental Contitech. Once again, our design is not only more efficient, but it’s also much more affordable! Each shock is covered under a lifetime warranty (fits right or left) THIS IS FOR TRUCKS WITH ADS. IF YOU ARE UNSURE, PLEASE CLICK ON OUR FAQ SECTION OF OUR WEB SITE. WE HAVE POSTED PICTURES ALONG WITH A DETAILED DESCRIPTION SHOWING YOU HOW TO TELL IF YOUR TRUCK IS EQUIPPED WITH ADS. http://www.arnottindustries.com/part_MERCEDES-BENZ_Air_Suspension_Parts_yid18_pid146_gid626.html