SmartRide's air spring for the rear right of the 2000-2006 BMW X5 (E53 w/Rear Leveling Only, Comfort) is a rugged aftermarket air spring that will affordably replace your leaking air spring. The SmartRide air spring provides a smooth, comfortable, ride and offers an exact fit for quick installation. This spring is made with a durable rubber air bladder and impact resistant plastic top and bottom mounts and includes a new seal kit. SmartRide's economical air springs provide O.E. like form, fit and function and are designed for many years of trouble free driving.