BMW Mini r50 r52 Crankshaft Pulley (Vibration Damper) harmonic resonance Crankshaft Pulley (Vibration Damper) NOTE: 2007-2008 fits Cooper Covertible ONLY. BMW Mini part# 11 23 7 829 906, fits first generation NON-S cars. Also INCLUDED# 11 23 7 829 918, BOLT that must be replaced. Genuine BMW Mini part, recently made: not been lying around.