Hi,
Mine are Eibach spacers. I don't know about part numbers, I only know they fit perfectly on the hub spigot and the bolt holes line up.
The outer diameter also perfectly matches the machined line / point on the hub face where it begins to chamfer inwards.
The Eibach website shows the same parts for E9x and Fx see link and scroll down:
http://www.eibachshop.co.uk/eibach-p...m#.V_ZRGeArLtU