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DIY: Cabin Air Filter stripped threads repair
Published by Bimmer305
06-20-2013
DIY: Cabin Air Filter stripped threads repair

My cabin air filter threads where stripped so I ordered some Brass Press-Fit Expansion Insert for Plastics from McMaster.

1- Drill the plastic thread with the adequate drill bit size according to whichever insert you ordered.

2- Use some type of glue for plastic to make it stronger.

3- Push/hammer the insert inside the drilled hole.

4- Done.

Materials that I used:

- Brass Press-Fit Expansion Insert P/N: 94510A050

- M6x1 Screw P/N: 98093A436

- JB Plastic weld

Note: I would not recommend getting the same insert I used because I found out they are a little too big. It would have worked better with a smaller one.
A better one to use would be:

- Brass Press-Fit Expansion Insert P/N: 94510A045
http://www.mcmaster.com/nav/enter.asp?partnum=94510A045

- M5x0.8 screw P/N: 98093A432
http://www.mcmaster.com/nav/enter.asp?partnum=98093A432
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  #1  
By E90Company on 06-20-2013, 07:10 PM
Not bad!
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  #2  
By Jeremy on 06-20-2013, 07:20 PM
Well done sir
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  #3  
By Lunatic Fringe on 06-20-2013, 07:26 PM
Awesome thanks for this. Mine got stripped when some hasty technician forced the wrong size bolts in there.
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  #4  
By 1nityrider on 06-20-2013, 07:43 PM
Well done sir!! Something I will be doing.
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  #5  
By jpirelli on 06-20-2013, 08:01 PM
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You are my hero
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  #6  
By cwarren on 06-20-2013, 10:37 PM
nice job seen people just through in bigger screws but I dig this ..very clean
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  #7  
By -StanceCity- on 06-20-2013, 10:43 PM
Good shit man!
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  #8  
By Moutamid on 06-20-2013, 10:50 PM
nice bro
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  #9  
By bigdaddycane on 06-21-2013, 09:22 AM
great idea....someone add this to the DIY section as it can help many people with the same problem.
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  #10  
By BoostedE90 on 06-21-2013, 09:39 AM
Well done sir!
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  #11  
By Bluesun on 06-21-2013, 09:44 AM
Just another person chiming in that this is an awesome idea, and thanks for posting this! I'm not sure why I never thought about doing this...but it's a great idea. Especially given how many times it seems like I end up taking that damn thing off... I'm missing a couple of bolts on it anyhow.

Now someone just needs to do a writeup on how to DIY fix the little sensor things that are near this ( on either side, I think they're rain sensors?). Mine no longer clip in . The dealer that I always took my car to sure did abuse the engine compartment...
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  #12  
By akotten on 06-21-2013, 09:52 AM
I approve. I was going to do the exact same thing for the intercooler mounting holes.
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  #13  
By 135Pats on 06-21-2013, 09:54 AM
Well done, ive managed to strip mine as well.
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  #14  
By tcw on 06-21-2013, 09:58 AM
Ordered the parts! Thanks!
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  #15  
By 335xi Kevo on 06-21-2013, 10:13 AM
Mine have been toast for a long time! MUCH appreciated!
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  #16  
By Bimmer305 on 06-21-2013, 11:07 AM
You are welcome guys.

I don't know how they could engineer a steel screw to screw on a plastic thread
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  #17  
By akotten on 06-21-2013, 11:26 AM
Quote:
Originally Posted by Bimmer305 View Post
You are welcome guys.

I don't know how they could engineer a steel screw to screw on a plastic thread
Most likely just the effects of mass production. Literally every penny saved is considered. Probably had the screw somewhere else in another assembly and was cheaper than bringing in another plastic variant.
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  #18  
By jpirelli on 06-21-2013, 12:10 PM
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Anyone want to order those from McMaster and split them up for whoever is interested? I don't need a pack of 25 inserts and 100 bolts.
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  #19  
By 335okc on 06-21-2013, 01:15 PM
brilliant solution! i've been pissed off at mine since i keep having to take the cowl on and off.

Quote:
Originally Posted by jpirelli View Post
Anyone want to order those from McMaster and split them up for whoever is interested? I don't need a pack of 25 inserts and 100 bolts.
that's what i had in mind, but probably more economical for someone closer. i'm in okc, OK if anybody wants to do this sharing.
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  #20  
By SHEEDI on 06-21-2013, 01:38 PM
Nice work

Thanks
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  #21  
By Rotorocious on 06-21-2013, 01:41 PM
Bravo sir.
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