Hey Guys with Magnum Air Gap

Use a brass inverted flair fitting, screw it into the intake and then screw your temp. probe into it. They used to be available at the hardware store but now that everything comes from "big box home improvement" stores, I'm not sure they carry them. I would recommend that you take the gauge when you go to the store so the clerk don't have to try and imagine what your doing, usually when you mention automotive stuff at a home improvement store that stops them dead in their tracks. Some auto parts stores will have them if you can find one with a clerk that has actually worked on a car and don't just look in the computer. I personally bought a box of 100 so I wouldn't need to go searching for a real hardware store every time I need one. If you don't have any luck locally PM me and maybe I can get you one.