Just by looking, I can't tell you what they are. IIRC, AC fittings (at least US AC fittings) are by #. Ex: #2, #4, #6. I personally would just measure the dimensions, and get the thread pitch (if you have a thread pitch gauge). If not, you should be able to get one at your local hardware store, or a good parts store. a GOOD parts store would be able to look up the fitting, vehicle specific. But it might not "be in the computer" . I get mad when I go to a parts store and try to find things, when there are morons behind the counter /rant/