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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 Mon, Jan-08-2018, 03:00:25 AM   #1
AW///M3
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Default Center exhaust mount replace

searched and couldn't find a DIY for this, is it pretty straight forward?
does section 1 or 2 have to be removed?
considering OE or aftermarket for these two center mounts depending on how much of a PITA it is to do on jacks/stands, your suggestions appreciated.
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Old Mon, Jan-08-2018, 04:31:54 AM   #2
mrgizmo04
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Default Re: Center exhaust mount replace

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Originally Posted by AW///M3 View Post
searched and couldn't find a DIY for this, is it pretty straight forward?
does section 1 or 2 have to be removed?
considering OE or aftermarket for these two center mounts depending on how much of a PITA it is to do on jacks/stands, your suggestions appreciated.
You talking about the rubber hangers? Can you point to realoem diagram to specify what you are replacing?

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Old Mon, Jan-08-2018, 05:28:53 AM   #3
AW///M3
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Default Re: Center exhaust mount replace

OE BMW part number 18207832991

Towards the center of the exhaust, not near the rear muffler
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Old Tue, Jan-09-2018, 08:57:17 PM   #4
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Default Re: Center exhaust mount replace

anyone know if the sections 1 or 2 have to be removed to replace these two mounts?
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Old Tue, Jan-09-2018, 09:47:22 PM   #5
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Default Re: Center exhaust mount replace

I don't think they do. Undo sect 2/3 joint, maybe need to lower v brace a bit. Undo the 4 13mm hex bolts holding the plate that houses the mounts (back one iirc). Now, lower the pipes enough to get a 13mm wrench or socket on the top nuts (on top of the mount). Then do the bottom 2 13mm.

I think this should work. I, like most, have done it with the pipes off, but there should be enough room for this with a full set of tools at least.

My mounts didn't need replacement at 171k honestly. They don't hold much up, they squish between a part of the sect 2 that mounts to sect 1, so there's not a ton of support needed like the muffler hangers.
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Old Wed, Jan-10-2018, 02:02:43 AM   #6
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Default Re: Center exhaust mount replace

Quote:
Originally Posted by TboneM3 View Post
I don't think they do. Undo sect 2/3 joint, maybe need to lower v brace a bit. Undo the 4 13mm hex bolts holding the plate that houses the mounts (back one iirc). Now, lower the pipes enough to get a 13mm wrench or socket on the top nuts (on top of the mount). Then do the bottom 2 13mm.

I think this should work. I, like most, have done it with the pipes off, but there should be enough room for this with a full set of tools at least.

My mounts didn't need replacement at 171k honestly. They don't hold much up, they squish between a part of the sect 2 that mounts to sect 1, so there's not a ton of support needed like the muffler hangers.
Mine are squished more than usual but seem to be holding fine at 183k. If you do replace them, get oe for sure unless you know for certain who makes the oe mounts, I never found a source. Why do you want to replace them?
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Old Wed, Jan-10-2018, 10:41:48 AM   #7
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Default Re: Center exhaust mount replace

Thanks, i thought i saw a tear in one of them while I was under there "beefing" up the rear muffler hanger, so I'll double check considering your guys' saying you're are fine at 171k and 183k, I'm at 189k. I just the RACP reinforced with new diff bushings and a new giubo and CSB so I thought I may as well do those center hangers since I got a good deal on the reinforcement, but if I don't have to, then I wouldn't.
It seems the rear passenger side exhaust hanger takes the most beating. I "beefed" up a really torn up one, so instead I might just buy a new aftermarket rear muffler hanger and "beef" it up.
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Discussing Comprehensive CSL Intake Thread 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)