AS-3309, is an Arnott designed front strut for the 2012-2018 Audi A6/S6 (C7 Chassis) and 2013-2018 Audi A7/S7 (4G Chassis), and is new, not remanufactured. This assembly replaces the OE strut and features a new custom tuned shock absorber to provide an excellent ride and outstanding performance. The Arnott strut is assembled in the USA with a multi-ply Continental ContiTech air spring bladder protected by an aluminum can along with a CNC-machined top mount made from aircraft-quality aluminum. The new air strut is assembled in the USA with Arnott's long-lasting seals, O-rings, bumpstop, heavy duty crimping rings, new air fitting and connector valve along with a dust boot to protect the strut.