Bilstein B4 Series OE Replacement gas-pressure shock absorber. Type: Twintube Strut Assembly. Position: Rear Right. This premium replacement strut is designed to restore the original ride characteristics and stability of your vehicle. Engineered to meet or exceed OEM standards. Included in this package: 1 x Bilstein 22-249807 Strut Assembly. Performance features include high-pressure gas technology and constant damping power under any load.