After using many products for pipe threads both for automotive and industrial hydraulic use over a 35 year period, Loctite's Liquid Teflon wins hands down.
How did you get the airgap looking so clean? What did you use on it?
It came out of the box that way. Or maybe I don't understand what you mean?
Oh lol I went back and looked at your old photos I just realized you switched intakes out! I thought you put the old one back on.