AN fittings

Q. A few years back, I swapped an LS into my G-body Monte Carlo. I plumbed the fuel injection system with braided rubber hose. Now I’m noticing a constant gasoline […]

In today’s video, Holley’s Jeremy Stoermer provides a quick, but thorough, explanation for how AN plumbing sizes are measured on behalf of Earl’s Performance. Stoermer explains how AN plumbing gets […]

AN stands for Army-Navy. The size specifications were established by the U.S. military during World War II and were originally used in the aerospace industry. AN fittings use a 37-degree […]

Wander through the pits at any drag race or examine enough cars at shows, and sooner or later you’ll find beat-up AN fittings. Some will have a few nicks and […]

In the automotive plumbing world, there a few different ways to measure thread size on fittings and hoses. The most popular thread measurements are AN and NPT. What’s the difference […]

Watch this Summit Racing Quick Flicks video and learn the basics of cutting braided hose lines and adding AN fittings to the ends. Tools You Will Need: Braided Stainless Steel […]