Update. So it turns out my local dealership had the covers. Apparently they were the last ones they had and I got them for just shy of $6, which is unheard of at a dealership. They oddly came with silver lettering NISSAN. I honestly like the plain black ones better but hey, they'll do! As usual, you guys were correct that the part number is 999F1-AA001.
tags: foglight covers, fog lights