Would that be Part # 7162 ? from Green filters.To make a long story short buy from GREEN directly so you get the right size. Mine came in and I can feel the extra power for sure.
One issue is I almost sent it back because it seemed to big again. So I took some clippers and shaved just a tiny bit off one end and I got the box shut. If you go to amazon you will see even some customer that bought a K&N said his was a little big as well.