SK-3268 is an Arnott remanufactured OE rear shock absorber for the left or right side of the 2012-2018 Mercedes-Benz GL/GLS (X166) and 2011-2018 ML/GLE (W166) both w/ADS and 4MATIC, excl. AMG. The OE shock is inspected, steam cleaned, and spin blasted to bare metal before it is recharged with new high performance shock oil. Worn components, such as the piston, rod guides and seal pack are replaced before being repainted with corrosion inhibiting paint. The shock and damping coil are dyno and functionally tested to assure OE performance. Arnott remanufactures and assembles this shock in the USA.