My 1995 Ford Explorer is leaking coolant out of this thing. I have figured out that it is a valve for letting coolant into the heater. I know that I could replace it myself if I had the part. I just don’t know what to call it so I can order a new one. There are no numbers visible on the sides of the part that are in view. Also, besides Ford, where can I get the replacement part? (I want to do this for as little money as I can.)
It’s an articulated gyrogophotor!
No, I think it’s called a “heater control valve”. A bit of searching seems to indicate that this part is prone to leakage in Ford vehicles. It also seems OEM replacements fare better than their aftermarket counterparts.
If it was the articulated gyrogophotor, how much would a replacement cost… $13,000? 
Thank you for the info, just what I was looking for!