All non m differentials across the BMW e46, x3, and z4 differentials swap over. All those chassis's share the same exact rear non m subframe. Yes the 3.73 from the n52 3.0i z4 will swap over like it was meant to be there. I swapped in a non m 3.46 e46 325i diff to my z4 3.0si no problem!
Quote:
Originally Posted by Harrison256
I currently have the 3.23 differential in my car and wanted to swap up to the 3.73 which comes out of a N52 3.0i Z4.
The add I'm looking at says it will NOT fit any 3.0si models. Everything I've heard hear says otherwise.. that any differential is swappable with any other differential as long as its not an M. So who is correct?
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