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Is there a difference in size between the 2013 and later 2014 model air filters? I got the part number from ford parts, then ordered it from rock auto. And it definitely does not fit in my air box. The lip is a little bit bigger and won't sit right on the edge, and I can't get the lid back on? Any ideas or am I just being dumb?
 

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Yeah I can confirm, I bought a Motorcraft air filter from Ford dealer and went to put it in and it would not sit right. Even now the air box lid is slightly open.

I couldn't find any visual difference between the two filters and thought I just installed it wrong.
 

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Is it installed correctly? I had a similar problem when I installed my Cobb filter where it initially seemed too big for the airbox and wouldn't allow me to put the lid back on.
 

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Likely just not installed properly. You really have to fiddle with it and push pretty hard to compress the rubber flange enough that it seats in circular cutout of the airbox.


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