I changed the Nissan factory air filter on my 2014 Altima 2.5L and I used a Fram Extra Guard air filter. Finding an air filter for this car in a retail parts store was a pain. That aside, the OEM filter had 52 closely spaced pleats on each side while the Fram had 28 pleats on each side. The Fram fit just fine and I've always had good results from Fram's air and cabin filters. But I can't help but wonder why there is such a difference in the number of pleats.