Identify please

Can’t figure out what goes in the hole on the right. The hole on the left I believe is the coolant drain. 97 3rz passenger side

 

Long skinny thing to bottom right of freeze plug is the coolant drain, the wired sensor is oil pressure sensor

 

Oil pressure sender. It’s pipe thread.

 

Not the best picture.

 

Here is a better pic with descriptions. The coolant drain hole is way smaller than the hole in question I believe. The hole with the black plug is where I’ll be using oil pressure gauge and building correct pressure before installing oil pressure sensor. The hole with the m12-1.25 thread size I’m not sure about.

 

I have the factory service manual, but it’s damn near as helpful as the Haynes. I wish it had one diagram of all sensor locations visible.

 

Any better?

 

Here's a different angle on a working 3rz......




If its a replacement engine that block drain tube extension is probably missing....