The Bilstein B6 2004 BMW X3 2.5i Front Left 36mm Monotube Strut Assembly is a high-performance suspension strut designed to provide superior handling and stability for the 2004 BMW X3 2.5i. The 36mm monotube design provides a more consistent damping rate for improved comfort and control while the gas-pressure construction ensures maximum stability and durability. This strut assembly is designed to provide a smoother ride while also reducing body roll and enhancing overall performance.