Small water/coolant leak from this plug?

[Damonkr]

I finall found where my coolant leak in my 4.0 is coming from. Its been leaking from here for about six months not sure but looks like just a coolant plug that need resealed. I has not leaked much volume havent had to put coolant in in that time. What is the plug? I think im going to pull and reseal it just wanted some input first.

Thanks in advance.

 

[Damonkr]

Silly me thats an oil passage! i found my "leak" just condensation from my heater core and ac coil. there is a small hole coming from the firewall where condensation drains i think. Can anybody confirm this? thanks