What is this part called and where can I get it?

[spowel4]

1997 Explorer, 4.0L OHV, A/T. I am assuming this thing is a freeze plug/expansion plug but I can't seem to find it listed anywhere so I wonder if it's called something else. It measures about 2 1/8" or maybe 2 3/16" across. It's at the back of the block, in the top center. Link to picture, the place where this thing goes is pretty much right in the middle of the picture: https://www.dropbox.com/s/qgwthrgt5homgu0/IMG_0883.JPG?dl=0

 

[hondakillah]

If it is a freeze plug, you should be able to goto a napa with those measurements to buy a couple if you're not entirely sure on the size. Like $1.50 a piece.

But to me that looks like the end of your camshaft, and you're missing some sort of seal.

 

[spowel4]

Oh wow, you got it man, thanks! I've been looking for engine freeze plugs and couldn't find this thing but as soon as I started looking for camshaft stuff, BAM! There it was, it's a camshaft end plug. Thanks again!