Connecting AN Fittings to Hard Line Made Easy

If you're building a custom fuel system or plumbing a turbo, figuring out how to adapt an fittings to hard line is basically a rite of passage for any serious DIYer. It's one of those tasks that sounds intimidating at first, but once you get the hang of the mechanics, it's incredibly satisfying. There's just something about a clean, rigid line that looks way more professional than a bunch of floppy rubber hoses held together by gear clamps. ...

February 5, 2026 · 7 min · Vichelle Carlitos