M3 Diffuser on Stock bumper
 

Has anyone here put a M3 Diffuser on a stock rear bumper. Does it fit in directly? Any fabricatio to be done? If you have done it can you post pics as I might just change the diffuser to a M3 instead of the whole rear bumper. I want to see how it would look.

Thx

iv seen it done, apparently its really easy. just take the old black part out and put the new one in there.

Yeah right just that easy huh?.. cool. $60 bucks will get me M3 rear bumper!!!! yeah baby!!

thx man!

lol, I also hear that it's NOT that easy. shaving and modification is needed.

^^Just had to brust my bubble huh!!lol jus kidding.. hopefully it won't need much modding. I'll try it out and will see what happens.

lol keep us posted. It's useful info.

You have to shave the top corners that are on the outside of the diffuser. The OEM diffuser's top corners are squared edges, whereas the non-M bumper accepts rounded edges. That's the only thing you have to change :)

Pics? I know the part but I have no clue what the difference is...

There are also aftermarket M-style yet not truly M that will fit the non-M bumpers plug and play. Pretty sure understeer sells them

^^the one understeer/bavauto sells is scrap, a modified OEM one fits better.

i've noticed the aftermarket m3 diffusser for an non m3 bumper looks different, more bigger and stick's out alot. as the oem one flows better

Already ordered OEM M3 Diffuser should be arriving sometime in late next week. Once I get it I'll see what how to make it fit.. I will post pic's when I am done!

I know this is bringing up a old topic......
but any updates on how it turned out or any pictures?
thanks

i got one, no problem.. fit fine.. looks good also.

^^ thanks for the reply.
Do you know the bmw part number? or does anyone else know it.
I am going to get a friend to order it for me.
thanks