Leaderboard

That is a weird one. The 2001.5 service manual has different exploded diagrams for the two different brands of master cylinder, but there's no explanation for why there are two options. The info at the bottoms of some of the Rockauto listings show everything the same between them, with the exception of the size of the mounting holes, which are eleven thou smaller on the Tokico for some reason. (0.343" Tokico, 0.354" Nabco.) I don't see any notes on their brake booster listings for which master they go with, so I'm guessing this tiny difference (eleven thou, or 0.28mm) isn't significant to the size of the studs. I suspect that this is just two suppliers of the same part, but I don't know that, and I can't explain why the aftermarket would bother to reproduce both variants if there wasn't some functional difference between them. Looks like the body of the master should be clearly marked with the brand name, so you should be able to tell which one you've got currently. I would replace like with like, on the off chance it matters. Failing that, I'd trust Nissan's parts lookup, and roll the dice on whichever variant was cheaper that day.