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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Dec-18-2010, 12:00:12 AM   #1
Avia2
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Default Brackets on Mid-Pipe of E46 M3 rusted and cracked. How do I...

Mount my new exhaust. I need to get a new flanges on the original mid-pipe section so that I can bolt on my new exhaust. I was so excited today but then disappointed to see the crack. Any Ideas?

Last edited by Avia2; Sat, Dec-18-2010 at 02:58:44 AM.
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Old Mon, Dec-20-2010, 02:53:19 PM   #2
Michalek0915
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Default Re: Brackets on Mid-Pipe of E46 M3 rusted and cracked. How do I...

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Originally Posted by Avia2 View Post
Mount my new exhaust. I need to get a new flanges on the original mid-pipe section so that I can bolt on my new exhaust. I was so excited today but then disappointed to see the crack. Any Ideas?
This is a common problem on the E46 M3's. Mine was rusted as well and only one of the flanges on the mid-pipe is replaceable if you are referring to Section 2, which I believe you are so in order to get a new flange you would need a new pipe. Look for one that has been slightly used or invest $400 or so for a new performance one. Hope that helps.
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Old Sat, Nov-07-2015, 09:09:10 PM   #3
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Default Re: Brackets on Mid-Pipe of E46 M3 rusted and cracked. How do I...

This happened to me today. The only real solution can't just be to buy a new midpipe...?
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Old Sat, Nov-07-2015, 10:55:39 PM   #4
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Default Re: Brackets on Mid-Pipe of E46 M3 rusted and cracked. How do I...

Assuming you are talking about the flanges one of them on section 3 is easy to change. And as the other one you could do it the same way I fixed the flanges on my muffler.

Both where so rusty they came apart when I was working with the.
So I ordered new ones and cut of the coned part of the pipes so I could slide on the flanges.



And then I welded (from the inside) them on and ground down the excess weld beed.




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Old Sat, Nov-07-2015, 11:31:05 PM   #5
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Default Re: Brackets on Mid-Pipe of E46 M3 rusted and cracked. How do I...

Buy a good used cheap mid pipe? There are a few in the classifieds.
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Discussing 996 Brembo BBK conversion caliper brackets in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)