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      11-21-2012, 04:13 PM   #1
jcnpa
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alarm siren

I have looked but do not see anywhere where it states to put the siren in a Z4MR. Can someone tell me if it is the same as the I or SI and goes in the rear passenger bumper area? Or is it the same as a Z4MC and it goes under the car in the back after removal of the rear panel.

Thanks in advance for any info.
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      11-21-2012, 05:04 PM   #2
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Edited to remove incorrect answer and avoid any possible future confusion.
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Last edited by SD ///M4; 11-21-2012 at 07:34 PM.
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      11-21-2012, 05:13 PM   #3
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The M is different, it goes under the rear diffuser.

http://www.bimmerfest.com/forums/sho...53&postcount=9
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      11-21-2012, 05:43 PM   #4
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Ok, since we're talking about the rear diffuser, does anybody know the p/n for the two 12mm nuts shown in this pic. When I replaced the mufflers I took off the diffuser and discovered that these two nuts were missing.



I looked on realoem.com and thought it was p/n 51711958025, plastic nut, #4 in this diagram, so I went to the dealer and they gave me two plastic nuts that aren't threaded and have a much wider built-in washer base. I haven't tried to put them on and I'm not sure that the washer base will fit into the recess, so I don't think that this is the correct part (click diagram for realoem link):



Hmmm, looking at this diagram again, I think that it's actually p/n 12421438388, cap nut, #30 in the above diagram. Can anyone confirm?
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      11-21-2012, 06:26 PM   #5
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Thanks inTgr8r, appears it is the same procedure as the Z4MC.
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      11-21-2012, 11:00 PM   #6
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^ yes M coupe & roadie are the same.
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