Arnott Industries Air Strut Assembly - AS3309: Arnott Industries Air Strut Assembly - AS3309 is a direct-fit, OE replacement air strut assembly designed to restore the original ride height, handling and control of your vehicle. It features a new air spring bladder manufactured by Continental ContiTech, new air fittings, a new seal, and a new heavy-duty crimping ring. It is designed to replace the OE strut assembly and includes a limited lifetime warranty.