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According to realOEM, the 33108659989 part number is a 2.81 final drive ratio.
Also, drive shaft for the pre-vs post LCI car's are different - 435i = 1509mm, 440i = 1504mm.
Axle shafts are also different part numbers between pre- and post LCI automatics. It seems like LCI made the axles common between auto/manual and manual pre-LCI, but pre-LCI auto have a unique part number.
So the known issues with putting a manual diff into an automatic are driveshaft length is different, and axle shafts are different length, and some dust seals are different. Based on that known incompatibility, I believe this part number will not work for pre-LCI automatics, without additional parts being changed, or potentially custom work being done.
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