51 0 320 Side window installation aid (door)
WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For aligning side windows in X-axis.
Series: E92, E93
SI number: 1 03 07 337
Order number: 51 0 320
Side window installation aid (door)
Consisting of:
1 = 51 0 321 Installation aid, left
2 = 51 0 322 Installation aid, right