AS-3005 is a new, Arnott-engineered, aftermarket air suspension strut for the front of the 2007-2012 Mercedes-Benz GL-Class (excluding GL550) SUV w/AIRMATIC and W/O ADS (Active Damping System). This new assembly replaces your worn O.E. strut and features a new custom-tuned shock absorber calibrated to provide an excellent ride and outstanding performance. The Arnott strut includes a new multi-ply air bladder from ContiTech along with a steel top mount. This new air strut is assembled in the USA with Arnott's long-lasting seals, new O-rings, bump stop, heavy-duty crimping rings and 4mm air fitting.