The Bilstein B4 Air Suspension modules are designed to provide the original ride quality and handling of your Mercedes-Benz S-Class. This monotube air strut is a direct OE replacement for the front right position, ensuring seamless integration with the vehicle's active suspension system. Features: Constant damping power under any load, high compression and rebound for superior handling, and proven Bilstein gas-pressure technology. Components included: 1x Front Right Air Strut Assembly (Part Number: 44-400224).