The Bilstein B4 2014 BMW X5 AWD Rear Left Twintube Strut Assembly is a high-quality replacement strut assembly for BMW X5 vehicles. This strut assembly features a monotube gas-pressure construction for superior performance and handling. It is designed to provide improved ride comfort and stability, and is constructed from corrosion-resistant materials for long-term durability. The assembly includes a dust protector, a protective boot and a spring seat. This strut assembly is an ideal choice for restoring your BMW X5's suspension system.