Brand New Bilstein 46mm Monotube Rear Shock Absorber (Bilstein Part #24-008136). Bilstein B6 Performance dampers are a performance upgrade to OE dampers designed to be paired with the OE factory spring. These dampers offer application specific valve settings with a monotube design to bring out the best handling performance of a vehicle. Each damper is rigorously tested for quality that meets or exceeds OE standards. B6 Performance dampers will provide improved safety and handling performance with the added benefit of world-famous Bilstein quality. Fits: BMW: 2800: 1968-1974 2800 Base L6 2.8L 3.0CS: 1971-1974 3.0CS Base L6 3.0L 3.0CSi: 1971-1974 3.0CSi Base L6 3.0L Bilstein's old part numbers on this shock was B46-0813, F4-B46-0813-H0, & F4-B46-0813-H1.We also sell these shocks in complete 4 shock sets. Click here for those listings.