SK-3607 is an Arnott designed new shock for the rear left side of 2007-2013 BMW X5 (E70) and the 2008-2014 X6 (E71). The new shock is built with a custom-tuned, velocity-sensitive, damper calibrated to provide a smooth yet responsive ride. This completely new shock includes a new polyurethane bump stop, protective dust boot, and new top and bottom mounts along with coil resistor to eliminate any suspension dashboard warning lights. This replacement BMW X5 rear shock is assembled by Arnott in the USA.