I don't know where I got this but just came across it in my files so thought id reshare. Helped me in the past.



https://www.ford-trucks.com/forums/p...ctureid=129632

 

 

Looking at the font style, font colors, and background, I can easily tell that you snapped that screen shot off my web site, but I only regurgitated it from info I gathered here in FTE. I'm glad to see that the info is being shared.

 

any of them a better price then the oem 6637?

 

I never got comfortable with the 6637. It seemed I kept finding signs of fine dusting after traveling down dirt roads. I sealed and resealed. Probably just me though. Also, I wasn't aware of the different types of media the filters have at the time. If doing again I would have made sure to get the 6637 filter made for humid/wet areas. This was another thing freaking me out every time it rained hard or driving behind traffic with tons of water. I eventually went with the FORD AIS for the performance and peace of mind. It was $195 and the 6637 is like $100 or so from vendors here on this site. For the extra $90 it is what I should have done in the first place.