Bilstein B1 Upper Rear Shock Support Mounting Kit (Part No: 12-117109). This premium mounting kit is designed to restore original performance and ensure precise shock absorber fitment. It reduces noise and vibration while extending the life of your suspension. The kit includes: 1x Shock Mount (Upper), 1x Mounting Gasket/Seal, and necessary washers/nuts. Engineered to meet or exceed OEM specifications for BMW 3 Series and Z models.