WARNING: This page is about a different car, the 2016 BMW Z4, 2015 BMW Z4, 2014 BMW Z4, 2013 BMW Z4, and 2012 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
(Tensioning device) For resetting the adjusting ring and installing the self-adjusting clutch on the flywheel without tension. Replaced by 212170 , 212180 , 21 2 190 (0 493 841)