The Bilstein B6 2007 BMW X5 3.0si Rear Left 46mm Monotube Shock Absorber is designed to provide superior handling and stability for your vehicle. It features a 46mm monotube design with a gas-pressurized internal floating piston that provides consistent performance and damping, even under the most extreme driving conditions. This shock absorber is designed to deliver a smooth ride with improved body control and a longer service life. It is corrosion-resistant and has a zinc-plated finish for superior protection against the elements.