Ryan, you can do this yourself now online...by using the parts cross-reference links (there's a couple of links thrown in around the site) at
www.realoem.com/bmw ... see the link highligted in red and with arrows pointing at it in the pic below or if you have already entered info for a vehicle and you've clicked on the Part Search link...there is a link
below the 2 dialog boxes (searching by "part #" or by "keyword") that says
Part Vehicle Search...that link will allow you to enter an 11 digit or 7 digit BMW part number and it will cross reference it to all compatible BMW models...no need to have the BMW ETK CD...it's all online now:
http://www.realoem.com/bmw/partsearc...1&mospid=47519
(or you can click the link on the home page if you already know the part #..see red arrows in pic below)
I coulda swore Iv'e posted this info before!