M Performance Diffuser mystery brackets

MsportyX35 · 06-08-2018, 03:06 PM

I just unboxed an OEM M Performance rear diffuser for the M235i that I ordered to install onto my 228i, along with the M235i exhaust that I bought from another forum member. In addition to the diffuser, the box contained some masking string, and two brackets, about an inch wide, and about as long as the diffuser is high (see photo). I’ve watched a couple of videos of the install. It seems straightforward. But I’ve seen and read no mention of the brackets. Any ideas?

Marmugmotleocay · 06-08-2018, 04:48 PM

They are support pieces.If I remember correctly from when i put mine on. They install on top of the heat shield and the bottom f the diffuser. Its a real easy install.

MsportyX35 · 06-08-2018, 05:23 PM

Quote:

Originally Posted by Marmugmotleocay

They are support pieces.If I remember correctly from when i put mine on. They install on top of the heat shield and the bottom f the diffuser. Its a real easy install.

Thanks! That’s more or less what I assumed based on the shape and length. I just found it odd that I hadn’t seen them in an install video or write up. If anyone knows of a good walk though that includes them, let me know. Otherwise, I’m sure I’ll manage.

VPB74 · 06-08-2018, 06:48 PM

I wondered about those brackets when I got my diffuser too. I found a video somewhere that showed how they were attached. I've had my diffuser installed without them for a couple of months now without any issues, but I suppose I should get them installed at some point...

aozer · 06-08-2018, 07:35 PM

I didn’t put them on mine and it’s been fine. I don’t remember them even coming with my diffuser

335pilot · 06-09-2018, 12:39 PM

Quote:

Originally Posted by aozer

I didn't put them on mine and it's been fine. I don't remember them even coming with my diffuser

This is straight from BMW installation instructions document 01292343366 "M Performance Aerodynamics Package Retrofit Kit". Hoping you can read this, or find online.

MsportyX35 · 06-09-2018, 04:32 PM

Quote:

Originally Posted by 335pilot

This is straight from BMW installation instructions document 01292343366 "M Performance Aerodynamics Package Retrofit Kit". Hoping you can read this, or find online.

This is incredibly helpful, Pilot. Thanks so much for this!

335pilot · 06-10-2018, 01:14 PM

Quote:

Originally Posted by MsportyX35

Quote:

Originally Posted by 335pilot

This is straight from BMW installation instructions document 01292343366 "M Performance Aerodynamics Package Retrofit Kit". Hoping you can read this, or find online.

This is incredibly helpful, Pilot. Thanks so much for this!

No problem. I used this when installing my kit. Were you able to read/find this? If not I can send entire PDF by email if you PM address.

MsportyX35 · 06-10-2018, 03:09 PM

Quote:

Originally Posted by 335pilot

No problem. I used this when installing my kit. Were you able to read/find this? If not I can send entire PDF by email if you PM address.

Yes, please. PM sent

Questofthetune · 06-10-2018, 04:05 PM

Without them the diffuser was way less firm and I swear it was almost flapping at high speeds before I went back and added it.

MsportyX35 · 06-10-2018, 05:41 PM

Quote:

Originally Posted by MsportyX35

Yes, please. PM sent

I just found it in my junk mail folder. Thanks so much!

Driven By CM · 04-20-2024, 05:54 PM

Anyone know the part number for these?

Found a spare set laying around and I’m curious if they’ve got any use for my M4 or if I should let them go (I sold my M235i).

06-08-2018, 03:06 PM	#1
MsportyX35 Enlisted Member 25 Rep 44 Posts Drives: '14 xDrive35i M Sport, Alpine Join Date: Feb 2017 Location: St Paul, MN iTrader: (0)	M Performance Diffuser mystery brackets I just unboxed an OEM M Performance rear diffuser for the M235i that I ordered to install onto my 228i, along with the M235i exhaust that I bought from another forum member. In addition to the diffuser, the box contained some masking string, and two brackets, about an inch wide, and about as long as the diffuser is high (see photo). I’ve watched a couple of videos of the install. It seems straightforward. But I’ve seen and read no mention of the brackets. Any ideas? Attached Images __________________ Current: F22 228i M Sport Mineral Grey, E84 X1 xDrive35i M Sport Alpine White, R53 Mini Cooper S JCW Indi Blue Previous: E46 330i M Sport Orient Blue, and a bunch of non BMW mostly crap cars, except the CRX, which was an absolute blast
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06-08-2018, 04:48 PM	#2
Marmugmotleocay Captain 1570 Rep 914 Posts Drives: 2021 BMW X3M Competition Join Date: Jun 2016 Location: York, PA iTrader: (2)	They are support pieces.If I remember correctly from when i put mine on. They install on top of the heat shield and the bottom f the diffuser. Its a real easy install.
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06-08-2018, 06:48 PM	#4
VPB74 Private 38 Rep 66 Posts Drives: 2018 M240i Join Date: Jan 2018 Location: California iTrader: (0) Garage List 1949 Dodge Power Wagon [0.00] 2018 BMW M240i [0.00]	I wondered about those brackets when I got my diffuser too. I found a video somewhere that showed how they were attached. I've had my diffuser installed without them for a couple of months now without any issues, but I suppose I should get them installed at some point...
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06-08-2018, 07:35 PM	#5
aozer Lieutenant 995 Rep 598 Posts Drives: M235i Join Date: Sep 2016 Location: Texas iTrader: (0)	I didn’t put them on mine and it’s been fine. I don’t remember them even coming with my diffuser
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06-10-2018, 04:05 PM	#10
Questofthetune Captain 446 Rep 780 Posts Drives: 13 GT50014 AW M235i(sold) Join Date: Jul 2016 Location: SFL iTrader: (1) Garage List 2014 BMW 235i [0.00]	Without them the diffuser was way less firm and I swear it was almost flapping at high speeds before I went back and added it.
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04-20-2024, 05:54 PM	#12
Driven By CM New Member 17 Rep 16 Posts Drives: 2020 BMW M4 CS Join Date: Oct 2020 Location: Santa Barbara, California iTrader: (0) Garage List 2020 BMW M4 CS [10.00]	Anyone know the part number for these? Found a spare set laying around and I’m curious if they’ve got any use for my M4 or if I should let them go (I sold my M235i).
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