23-3013 nut

WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

0491603 233013 nut MW

NOTE: (Thrust nut with bearing) [Discontinued]

Fig 1: Identifying Nut (0491603)

Courtesy of BMW OF NORTH AMERICA, INC.