Suits cars with a standard and aftermarket rear shock absorber with a 10mm pin. Will not fit E36 and E46 Cabriolet models           Suspension Brand    Rear Shock Absorber Shaft Diameter            Original BMW      10mm            AST      10mm            Bilstein HD, Sport, PSS Coilovers      10mm            FK Coilovers      10mm            H&R Coilovers      10mm            JRZ RS      12mm            Koni Sport      10mm            KW V1, 2, 3      10mm            ST Coilovers      10mm            Tein Coilovers      12mm           The above list is meant as a guide only.   If your shock absorber brand is not listed,  measuring the OD of the shaft will determine whether PFR5-5630-10 or  PFR5-5630-12 should be fitted.