Mini Cooper S Super Dampers 2014+ BMW B46 & B48 Engines Dampens torsional crankshaft vibrations at all RPM levels Protects against engine harmonics Direct replacement for the OEM unit 11-23-8-602-800 6-rib serpentine belt drive Laser-etched timing marks SFI 18.1 Certified for competition use Belt tensioner tool is required to remove or replace factory belt ATI puller will not work with this damper Specification Shell Material: Aluminum, 6-rib Inertia Weight: 2.20 lbs, 3 ring The damper fits F54, F55, F56, F57, F60 JCW Cooper S, as well as BMW F39 and F48 Models. which includes: (Does not fit Standard Mini Cooper with B38 engine) Mini Cooper S ('14-'24) Mini Clubman S / ALL4 ('16-'24) Mini Countryman S / All 4 ('17-'24) John Cooper Works / B48 ('15-'19) John Cooper Works / B46 ('20-'24) John Cooper Works Clubman ALL4 ('16-'24) John Cooper Works ALL4 ('17-'21) John Cooper Works Countryman ALL4 ('17-'24) BMW X1 (Non M) & X2 w/ B48 - SDRIVE28I, XDRIVE28I ('16-'22) BMW M35I ('18-'19)