Bilstein B4 Series Air Shock and Strut Bilstein B4 Front Strut Assemblies & B1 Mounts Kit For BMW E39 525i Bilstein B4 Front Strut Assembly for BMW E90 328i 07 14 eBay Shop Bilsteinkit Bilstein B4 OE Replacement Suspension Strut Assembly Pair For Buick SUSPENSION REBUILD KIT BILSTEIN B4 SHOCKS BMW E60 525i 530i 535i 545i. Bilstein B4 OE Replacement Suspension Strut Assembly Fitment: 2006 2010 BMW 550i Part #: 22 138361 Overview The Bilstein B4 OE Replacement Suspension Strut Assembly is engineered to restore your BMW 550i's original ride quality and handling characteristics. Designed specifically for models from 2006 to 2010, these struts help maintain the factory like comfort, safety, and stability that drivers expect from their vehicle. Whether your existing suspension components are worn or you're seeking to preserve the vehicle's original driving dynamics, these struts provide a reliable solution that supports a smooth, controlled ride and confident handling on the road. Constructed with high quality materials and precision engineering, the Bilstein B4 OE Replacement Strut Assembly ensures durability and consistent performance. They are designed to match the original specifications of your vehicle, making installation straightforward and ensuring optimal fitment and function. These struts are an ideal choice for drivers who want to maintain their BMW's factory ride feel while benefiting from the trusted quality of Bilstein. Key Features Designed to deliver a direct replacement for factory components, these struts feature a robust construction that supports consistent damping performance. The components are engineered to help restore original handling and ride comfort, providing a balanced driving experience. The assembly includes all necessary hardware for installation, ensuring a hassle free upgrade. With Bilstein's reputation for quality and reliability, these OE replacement struts are built to last and maintain your vehicle's performance over time. Construction & Design The Bilstein B4 OE Replacement Suspension Strut Assembly is crafted with durable steel and high quality sealing components to withstand the rigors of daily driving. The design incorporates Bilstein's proprietary gas pressure technology, which helps deliver consistent damping and ride quality that closely matches the original equipment specifications. Installation & Fitment This assembly is designed as a direct bolt on replacement for your vehicle's original struts. Proper installation should be performed by qualified technicians to ensure safety and optimal performance. Fitment details should be verified against your vehicle's specifications and the part number provided. Whats Included The package includes one complete suspension strut assembly, ready for installation, along with all necessary hardware for a secure fitment. Upgrade your BMW 550i's suspension with confidence using the Bilstein B4 OE Replacement Suspension Strut Assembly, engineered to restore factory ride quality and handling performance.