I was flushing the coolant on my del sol (d16) and the dang engine coolant drain plug flew off. So now my question you guys is what is the pitch and size for this bolt so I can get one to hold me off till i can get one from the dealer. Thanks in advance.

 

You can often figure out drain plug sizes by checking Autozone's website.

This is what it says the Dorman part number is: 490-216.1

So I Googled that (since Autozone.com doesn't say the specs, though Autozone's in-store ZNet should). Anyway, I found that it should be M14-2.0 and it's for '83-'08 Hondas and Toyotas according to Dorman's site.