All right guys I've have a 2003 Nissan Pathfinder and on the bottom right between the oil pan and the transmission there's a small plastic tray plug thing it's about an 3/4 of an inch wide 3 in long just a little plastic cap that plugs right up in between the oil pan and transmission bell housing I mean directly behind the oil pan what is that for and upon Pullman opening up like just trying to prying it out just to see bearings and crushed metal ring for like a bearing housing fill out before I go any further what did I get myself into please, you can see it right there behind the oil pan in front of the transmission it's kind of sticking down a little bit but fun opening it a little bit I had varians just fall out and start bouncing.

To be honest I have no idea what that can be for except maybe what you are seeing is the clutch mechanism (can't get enough clarity on the photo to exactly determine what it is)