AS-2784 is a new, Arnott-engineered, aftermarket air suspension strut for the front left-hand side of the 2003-2006 Mercedes-Benz S-Class (W220) W/AIRMATIC W/4MATIC. This new assembly replaces the O.E. strut and features a custom-tuned shock absorber calibrated to restore the vehicle's ride control and performance. The Arnott strut includes a new multi-ply air bladder from Continental ContiTech protected by an aluminum can along with an anodized CNC-machined top mount made from aircraft-quality aluminum. This new air strut is assembled in the USA with Arnott's long-lasting seals, O-rings, bump stop, heavy-duty crimping rings, new air fitting and solenoid along with a dust boot to protect the strut. Features: New Custom-Valved Shock Absorber Multi-Ply ContiTech Air Spring Bladder Pre-Assembled for Easy Installation Detailed Installation Manual Available Designed and Assembled in the USA