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Discussion Starter · #1 ·
hi i was wondering if anyone has had a problem with their diff clunking/popping when pulling away or reversing and would a diff off a 325ci fit my car or any other model thanks:banghead:
 

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OEM ///PLUS
2003 M3 6MT Slicktop
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23,983 Posts
what year is your 320ci? pretty sure the 320Ci uses the smaller pumpkin differential. it's not the same size as the larger 323/325/328/330 diff. i know those who have swapped in the small 3.91 diff in place of their larger diffs had to make some changes to driveshaft. one would think you'd have to do the opposite? :dunno:
 

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OEM ///PLUS
2003 M3 6MT Slicktop
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23,983 Posts
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