You are probably here because you tried plugging in your oil pressure sensor on your Holley Terminator X / X Max LS harness, only to find it doesn't fit!
Instead of buying a universal 1/8npt thread sensor and then buying another adapter to put it in; OR buying a wiring harness adapter or pigtail... this is an easy solution for your problem.
This sensor is a genuine ACDelco (GM) and threads into all Gen 3 & Gen 4 LS valley covers or blocks where your factory sensor is.
GM Part number: 12677836