What is this on the right side of the engine block?

[Double Dubya]

This is on the right side of the block right behind the right engine mount. It looks like a brass bolt with a wire terminal. Am I missing something or is it for an option that I don't have? The photo is taken from the right wheel well and the engine mount is just to the right. 2017 SR5

 

[ArthurKotb]

Looks like a terminal connector; maybe for a ground wire??? Have you checked a parts diagram to see if you can locate it?

 

[ecally]

Looks like the coolant drain for the block

 

[progress4m]

Looks like the coolant drain for the block

That is what I think as well.

 

[DougR]

It's a coolant drain for the block. I have opened it when I changed the coolant.

 

[BigBlueSince82]

There should be another drain port on the left side.

 

[<<<<]

Nope, 5th gen V6 has coolant drain on one side of the block only.

 

[DougR]

Two Engine Block Drain Plugs

The 2010 service manual shows two engine block drains. The one on the left side is very difficult to see and access. I have drained coolant from both sides of the engine block on a 2011 Trail by referring to item 4 in the following image which points at two locations. The 2016-2019 service manual shows only one engine block drain on the right side.