WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.
0494126 000226 Frame MW
Fig 1: Identifying Frame (0494126)
Courtesy of BMW OF NORTH AMERICA, INC.
NOTE:
(Side frame) Only required once for constructing the basic frame Discontinued, only available via complete tool [Not available separately]