Ram/Cummins air filters not all the same
A lot of us with 5.9's use the taller filter that's designed for the later, 6.7L. It breaths better and lasts longer because of its larger pleats (3" vs 2") I have a bit of extra power and the larger...
Forum Discussion
I found similar results between FLeetguard and Napa Gold when I got a bad tank of fuel and had to change the filter on a trip. I usually used FG but had to resort to the Napa part and was amazed to see it had at least 1/3 fewer pleats than the FG.
