Verified that it's a 3/8" NPT so ordered a reducer but I'm not sure if it'll work since the head of the IAT has to sit inside. So once I get them I'll see how far it sticks thru the reducer.
I got two different styles to see which worked better.
https://www.amazon.com/gp/product/B082Y86DV9/?tag=wranglerorg-20
https://www.amazon.com/gp/product/B00FPFMG8Y/?tag=wranglerorg-20
The brass would be easier to modify (if the sensor will thread down far enough into the reducer), you can shave off the head of the reducer so the sensor sits down in the hole further.