The Bilstein B6 2004 BMW X3 2.5i Front Right 36mm Monotube Strut Assembly is a high-performance suspension upgrade designed to improve ride quality and handling. It features a monotube design, with a 36mm diameter tube for increased strength and stability. The strut assembly also includes a dust cover and boot for added protection, and is designed to fit 2004 BMW X3 2.5i models. This strut assembly is a great choice for those looking to improve the performance of their BMW X3.