‘67 Barracuda vacuum gauge connection

66fs said

Here are some candidates from McMaster-Carr. Too soft and the tubing will collapse, high temperature can make it brittle over time. Fuel compatible? Only the first one has the right .21 OD but is red and only compatible with air and water. Good Luck

McMaster-Carr

McMaster-Carr

McMaster-Carr

McMaster-Carr

Click to expand...

That's too funny. I was looking through McMaster before going to sleep last night.

I do think that's the answer though. The first one, nominal 1/8. Maybe not that exact hose but that size in vacuum hose.

I had a similar dilema with the vacuum and emmissions hoses on my '85 Grand wagoneer - except there was no grommet that needed to be slipped through. But there was what looked like 5 different sizes used and many had to be replaced. I found the table, used the parts and shop manuals for what it worth, measured what I could, and bought lots of hose to see what worked!