[hypoxia]

Coach 1482 dash air uses M8 on low side and M10 on the high side.  I have been getting parts from Air Components for 35 years.  They also have a SCUBA shop there.
M10 Valve Core and M8 Valve Core   

Hi Tech Testing:            

[Richard]

Well,

It's higher teck than the spit I use.................

Thanks for the link, that is a very nice storefront with a huge selection.

[hypoxia]

The Air Components folks are very knowledgeable and helpful. I called a couple of months ago about a valve for a Chevy pickup and he proceeded to tell me where the A/C normally leaks because of the motor mounts sagging with age in that model & to check that.

That's a big gob of spit in the 10mm valve.