AS-3425 is a new, not remanufactured, Arnott air suspension strut for the front left side of the 2010-2016 Mercedes Benz E-Class (W212) and the 2012-2017 CLS-Class (W218) w/4MATIC, AIRMATIC and ADS. This new assembly replaces your worn OE strut and features a new custom-tuned shock absorber designed to provide a comfortable, yet responsive, ride. The Arnott strut includes a new Continental ContiTech multi-ply air spring sleeve and is assembled in the USA with Arnott's long-lasting seals, CNC-machined top mount, heavy-duty crimping rings and a new airline fitting.