The Bilstein B4 OE Replacement 16-19 BMW X1 Front Left Twintube Strut Assembly is a high-quality OEM replacement part for the BMW X1. This strut assembly is designed to provide superior handling, improved stability, and enhanced ride comfort. It features a monotube design for increased durability, a zinc-plated finish for corrosion resistance, and a gas-pressure technology that helps reduce noise and vibration. This strut assembly is a direct replacement for the original, and is easy to install.