WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.
0491891 312040 Mandrel MW
NOTE:
(Drift) For fitting the radial shaft seal in the front wheel hubs and on the drive flange for the rear axle differential [Discontinued]