WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Suction Cup (0494855)
Courtesy of BMW OF NORTH AMERICA, INC.
NOTE:
(1 pieces) for portal crane. Can again be ordered separated via BMW ordering system since 08/2011 - 83 30 0 494 855.