Aluminum water pump housing question

[GTXTHUNDER]

I purchased an aluminum water pump housing, but it has an extra threaded hole in it compared to the original one on my Gtx. What is supposed to go there?

Thanks.

 

[Joe Mopar]

A plug. or Temp. sender.

 

[wedge5]

Exactly!

 

[68383GTS]

Yep!

 

[69 Runner]

Temp sender