BILSTEIN B4, B6 or B8: Which is the right shock absorber? Front Shocks Absorbers for the BMW E39 535i and 540i Bilstein B4 Bilstein B4 Shocks BMW M3 F80 (2015 2018) [OE Replacement] Rear Only Bilstein B4 Gas Shock Absorber Rear Find prices. Bilstein Suspension Part #: 19 220093 Overview The Bilstein B4 OE Replacement Suspension Shock Absorber is designed to restore and maintain the factory ride quality of your 20172020 BMW 440i. Crafted with precision engineering and backed by Bilsteins reputation for durability and performance, these shocks provide a seamless replacement for your vehicles original dampers. They are ideal for drivers seeking to restore the smooth handling, comfort, and stability that BMW originally delivered, ensuring your vehicle maintains its intended driving dynamics and ride comfort. Constructed to meet or exceed OE specifications, the Bilstein B4 shocks are engineered to deliver consistent damping performance. They help absorb road imperfections, reduce body roll, and improve overall handling, making them suitable for daily driving, commuting, and spirited driving alike. Designed with durability in mind, these shocks are built to withstand the rigors of varied driving conditions, helping to prolong the lifespan of your suspension system. Key Features The Bilstein B4 OE Replacement Shock Absorbers feature advanced design elements that support your vehicles original handling characteristics and ride quality. Key features include: OE quality construction for seamless fit and function Precision engineered damping for smooth, controlled ride Durable materials designed to withstand harsh road conditions Backed by Bilsteins renowned reputation for quality and reliability Designed to restore factory ride height and handling Corrosion resistant coating for long lasting performance