I bought the Napa/Wix variant you mention, and while it looks like the center hole is correct, the gasket diameter and drainback hole circle diameter are much narrower than the Isuzu filters I've been using.

I have not actually tried fitting it to see whether this makes any difference, but it is definitely not exactly the same, unfortunately.


1988 Isuzu Trooper LS
2.8l Isuzu 4JB1-TC intercooled turbo diesel
www.dieseltrooper.blogspot.com