0490997 113470 Socket wrench insert Mechanical tool: Notes
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
(Screwdriver insert) Hexagon socket SW5/3/8" connection, shaft length 60 mm, for slackening and tightening chain sprockets on the camshaft