23 23 Synchronization Guide Sleeves (GS6-37BZ/DZ/MECH)

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2016 BMW M5, 2016 BMW 535i, 2015 BMW M5, 2015 BMW 535i, and 2014 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.