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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 10-23-2016, 06:23 PM   #1
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Join Date: Oct 2016
Posts: 9
Swapping 2003 325i rear end and subframe into 99 323i. What's will work?

I have a 99 323i manual trans with just short of 200k miles. After picking my car up from suspension refresh I was excited to drive it again after sitting around a month. So I was out driving it hard I heard something in the rear end clicking. I was pretty sure of it being the drive axles and mounted my GoPro underneath to see if I could see anything out of the ordinary. While I was underneath I shook the axles from side to side.
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So I started driving and sure enough the sound was gone. Once I knew that I looked on craigslist and found a rear end from a 2003 325i with 85,000 miles for $350 about an hour from me. So I went and picked it up. I also got a thermostat and a new water pump all for $380.

I wanted to know if everything but the differential is the same and can it all just be swapped into my car. I figure with it having 113,000 less miles on it than my car subframe and bushings that one will good be good to go for some miles. Ideally I'd like to take out the differential from the new one and then pull the river in from my car and take off the diff and put it in my car. Everything is in way better condition than mine.
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Last week I got all new shocks, struts, mounts, rear sway bar endlinks, RTABs, Control arms, control arm bushing's, front sway bar end links, new tires and computer alignment. I used all original parts on it to get back as close to factory handling as possible. I was next about to tackle the diff bushings and subframe bushings along with the gumbo and csb. It's crazy any of the original stuff made it almost 200,000 miles.
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Old 10-24-2016, 08:33 PM   #2
Registered User
Join Date: Jun 2012
Location: CT
Posts: 50
My Ride: 2006 white 330Ci ZHP
I have a whole entire ZHP rear end with amazing M lower control arms disk to disk, shocks still on it. 350$
ZHPkiddd is offline   Reply With Quote

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