WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
C17
Consisting of:
Fig 1: Identifying Device (231300)
Courtesy of BMW OF NORTH AMERICA, INC.
1 = 0491508 Adapter
3 = 0493256 Mandrel
2 = 0491509 Washer
NOTE:
(Support disc) For pressing the drive flange onto the rear axle final drive