I apologize if this has been covered before, but I searched everywhere. I need to know the size and thread pitch of the coolant plug in the front iron (not the drain plug). I need to know so I can buy an adaptor for my coolant sender. Thanks!

 

This is for an s4 turbo if it makes a difference.

 

Phil,take pic of the location.
I use an adapter on my upper rad hose for a temp sender.(buddy club).You can also use the sender location on the thermostat neck.( I got one there too.!)

 

Hey mister, the location is right below the stud for the a/c bracket, so it would be hard to take a pic. However, after much searching, it looks like it is 3/8 npt? I ordered a fitting, so i'll just have to wait and see I guess.