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On the F-100's there is a tab welded to the fender just forward of the opening and the bracket extends to the second bolt in where the air deflector is bolted to the gravel pan. I would think it would be the same on the big rigs just a longer bracket for the wide fenders.
On the F-100's there is a tab welded to the fender just forward of the opening and the bracket extends to the second bolt in where the air deflector is bolted to the gravel pan. I would think it would be the same on the big rigs just a longer bracket for the wide fenders.
They are very different on the f700 and larger compared to the f100. I have a big truck here and will get you a few pics
There is a service bulletin that addresses the need for more support in the front and the fix was to sandwich 2 air deflectors one on top of the other for added support. I have never seen one done this way but I have the original bulletin showing this as a fix.