Any damper is only as good as the equipment around it, so when you are replacing shocks absorbers and struts make sure your have the right service parts to get the most out of your suspension. If not already supplied with the shock or strut, BILSTEIN recommends replacing the bump stops and dust tubes. *Product benefits:* * All B1 Spare Parts components are designed to fit our BILSTEIN shock absorbers and struts. * All parts are produced to OEM standards and quality that BILSTEIN has built our reputation on. * Fitment is simple; all available components are designed to be used as original equipment replacements with no modifications required. PartNumber : bil36-266555 Description : B3 OEM Replacement Coil Spring Finish : Black Powder Coat Series : B3 OE Replacement Title : Bilstein Shock Absorbers California Proposition 65 : WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov Position : Rear 2006 BMW 325i Base L6.2996cc Suspension::Shocks and Struts 2012 BMW 328i Base L4.1997cc Suspension::Shocks and Struts 2007-2012 BMW 328i Base L6.2996cc Suspension::Shocks and Struts 2006 BMW 330i Base L6.2996cc Suspension::Shocks and Struts 2007-2012 BMW 335i Base L6.2979cc Suspension::Shocks and Struts