Yes sir, that's the one. Or perhaps the knock off looks like it uses shark bite tec to attach. It also seems to be geared towards Toyota. Do you think it will be an issue locating the right threads for Nissan differential?
Shouldn't be. It's just a JIS thread instead of a standard pipe thread. You'll have to determine diameter and thread pitch and compare it to a JIS chart. McMaster-Carr usually has good listings for stuff like that.