WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.
Note: for gantry crane
SI number: 6 04 03 (046)
Order number: 51 0 105
Side window locating fixture
Fig 1: Identifying Side Window Locating Fixture (51 0 105)