That's my worry.
The dealer told me the same thing. That this part is not for the E92 Coupe and therefore shouldn't go in. They did not specifically tell me that this would affect the Warranty but its one of those I don't want to have my transmission fail, and them turn around and go, "Although this has nothing to do with it, in no way could this affect the transmission in any way, since its not a part for this car, and its remotely related, we won't cover it." Thanks, probably do it anyway, and if I need a repair related to Clutch, Transmission, Power Train, etc., I will just put the old one back on.
E92 335i | 6MT | Space Gray | Black | Grey Poplar | Sport | Premium | iPod | HD | Rear Window Sunshade | Comfort