31-1005 Washer
WARNING: This page is about a different car, the 2011 BMW X6 and 2010 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.
0491855 311005 Washer MW
NOTE:
(Flanged washer) For centering of threaded spindle and as a support disc for removing and installing the rubber mount in the front axle support and in the wishbones, series: E12 [discontinued]
Courtesy of BMW OF NORTH AMERICA, INC.