-6an to 5/8-18 Inverted Flare Adapter Female

The RUSSELL -6AN to 5/8-18 Inverted Flare Adapter Female is a precision hydraulic fitting designed for custom fuel, coolant, and brake line installations in modified vehicles. This adapter bridges incompatible line standards, allowing you to connect -6AN hose to 5/8-18 inverted flare ports commonly found on carburetors, fuel rails, and distribution blocks. It is ideal for those building fuel systems for street rods, vintage restorations, or performance engine swaps.

The female configuration accepts a male -6AN fitting on one end while providing a 5/8-18 inverted flare port on the other. The inverted flare seat creates a cone-to-cone seal that withstands fuel pump pressure and thermal cycling without weeping or catastrophic failure. Russell's tight dimensional tolerances ensure repeatable, leak-free connections across thousands of engine start cycles.

This adapter is essential for hot-rodders and restoration specialists adapting modern -6AN fuel hose systems to original or period-correct fuel system components. It's equally valuable for turbocharged and supercharged engine conversions where you need reliable connections. The RUSSELL adapter simplifies the installation process, eliminating the need for expensive custom fabrication.