Arnott part AS-3061 is a completely remanufactured O.E. strut for the front left side of the 2013-2019 Mercedes-Benz non-AMG GL/GLS-Class (X166 chassis) and 2012-2018 ML/GLE-Class (W166 chassis) with ADS. Each Mercedes strut is painstakingly tested, disassembled, cleaned, recharged, painted and rebuilt from the ground up. The Arnott remanufactured strut features a new multi-ply rubber air bladder manufactured by Continental ContiTech along with heavy duty crimping rings, new O-Rings, bump stop, bottom seal, wiring harness and air line fitting. The Arnott remanufactured strut design is not only more efficient, but its also much more affordable! All Arnott remanufactured struts are designed to work with the vehicles Adaptive Damping System (ADS) and Auto Leveling functionality and are covered by a Limited Lifetime Warranty.