WARNING: This page is about a different car, the 2013 BMW X5 M, 2012 BMW X5 M, 2011 BMW X5 M, and 2010 BMW X5 M. However, it is still accessible from the selected car via links, so may be relevant.
0492221 333106 Washer MW
NOTE:
(Shape washer) For counter support during installing - model series: E28 [released]