These new fittings are made w/ slightly longer threads on the inverted flare end of the fittings. In some applications, the old style fittings would bottom out on the threads before the flare would seal correctly. The Steel adapters are recommend for Power Steering applications, and the aluminum fittings are ideal for most other inverted flare applications. Choose from fittings w/ nickel-plated steel, blue anodized aluminum, or black anodized aluminum.
Inverted Flare to AN Adapter Fittings w/ Longer Thread
Choose From Steel w/ Nickel Plating or Blue or Black Anodized Aluminum Fittings
Note the “L” Added to the Part Number for Long Threads – Just Before The “ERL”