Hmmm. There's no supersession on the -65F0E, and the -65F1B shows up as a no-fit for gen2's. I'll check tomorrow whether DPC shows a cross ref and if there's a bulletin for it. I might need to ask upstairs to clarify. It's possible the -65F1B is about to be the new "standard filter", because it does show it as the right number for '19+ Altimas and '18+ Maximas. I know those came with -65F0E's and as far as I know, that's what Express still uses for them. So my guess is your stock filters are fine and the new p/n just means a manufacturer change.