Originally Posted by Justhorsenround
You can get the fitting and hose at any Auto Parts Store. As Tiny said take the plug with you to match the threads. It will be a 90 degree fitting and the hose will slip over the barb end.
Really? Any auto parts store? I hope you are right.
I was just trying to verify the correct dimensions, but I can certainly cut a piece of the hose off as well and take the plug in.

The one on Sparky looks entirely different and I wish there was a source for the period correct one!