The Bilstein B4 2007 BMW X5 4.8i Premium Rear Right Shock Absorber is a high-performance shock absorber designed to provide superior handling and stability for your BMW X5. It features a mono-tube design with gas pressure technology for superior performance, and is specifically designed for the 4.8i Premium model of the BMW X5. It is corrosion resistant and includes a zinc-plated finish for long-lasting durability. The Bilstein B4 shock absorber is the perfect choice for those looking to upgrade their suspension system for improved performance.