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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 09-18-2012, 04:18 PM   #1
johnj80bmc
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Join Date: Jun 2011
Location: hamilton
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My Ride: bmw e46 320ci
e46 diff 320ci

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
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Old 09-18-2012, 05:16 PM   #2
Alex323Ci
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Location: Huntington Beach -Surf City USA
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My Ride: M3 & 323Ci (sold)
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?
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Old 09-19-2012, 12:10 PM   #3
johnj80bmc
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My Ride: bmw e46 320ci
hi my 320ci is an 2003 model i have been told that it is an 3.38 ratio diff thats on it
thanks
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Old 09-19-2012, 05:00 PM   #4
Alex323Ci
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according to the ETK that is the small pumkkin diff and not the larger one the 6 cylinders use(325).
here is the part looked up in the ETK and cross checked with other models.
http://www.realoem.com/bmw/partxref....r=on&details=1

http://www.realoem.com/bmw/partxref....=on&series=E46

http://www.realoem.com/bmw/showparts...85&hg=33&fg=05
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CF CSL LIP - NAVI - BMWPERF CF STRUT BAR - BMW GROUP N MNTS - GRUPPE M CF INTAKE - SUPERSPRINT - UUC BRKLINES, TRANS, RTABs - H&R SWAYS - 4.10 M-SPORT DIFF
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