C43 Custom Air Box For Sale.




I'm also using oem plastic to weld it together for a much stronger air box than before. I will post tomorrow.




The difference between the OE and enlarged box is clear. In this case one photo is worth a hundred words
It's a snug but perfect fit. Looks totally OE but it certainly goes soooooo much better
Sorry the front part is missing as it's in a never ending work in progress paint upgrade
I'm also using oem plastic to weld it together for a much stronger air box than before. I will post tomorrow.




I have to share the car with my wife so sometimes hard to get in there to do anything.
Kowalski, yes I have tried other plastic materials as well as plastic fillers for the cosmetics (hide the welds). I will be sticking with what I have now, works great.




The boxes are welded inside and out. And now I give them a pressure test, if they crack where the welds are I redo it as many times as it takes. I also fit test everyone one in my car so customer will not have a hard time. I've not had any complaints on fitment but I now do other procedures to make them fit better.
The boxes go through alot of heat with welding so not so easy to get them to fit right. That's why I tell people who email me about a how to do this. That I don't suggest they try, but if they want to that's ok. But I just wont go through all the how I do it steps...
Cold or hot weather no big deal. Plastic is tough.... Why so many questions??
Last edited by speed43; Oct 15, 2018 at 04:44 PM.








These C43 boxes are much harder to mod than the C55 boxes. Those are just pretty expensive to buy. But the labor is easier than the c43 boxes. But the c55 box does take a lot of detail to get it right. So both boxes tend to be equal in labor.
I pm'd the guy that wanted pictures of how the box looks installed. He has a Mercedes c450 so way different box. Guess he posted in the forum....
Last edited by speed43; Oct 15, 2018 at 05:59 PM.




One guy is interested but needs more time to save up the funds. I offered to sell to him for 480. I will sell at the same price to anyone else. First come first serve...
It's now been sold. Will have another soon.
I will post once I have one all done. I'm currently working on one and it's 80% finished.
Thanks.
Last edited by speed43; Nov 27, 2018 at 09:09 PM.
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