6AN Male to 5/16in SAE Quick Disconnect Male

The 6AN Male to 5/16in SAE Quick Disconnect Male fitting from REDHORSE PERFORMANCE is an essential fuel system component for builders seeking reliable, leak-free connections in high-performance engine applications. Whether you're upgrading a fuel delivery system, installing an aftermarket fuel pump, or routing fuel lines in a custom engine bay, this adapter bridges two industry-standard quick-disconnect formats to accommodate modern fuel system designs. Built for mechanics and enthusiasts who demand secure, repeatable connections without the risk of fuel spillage or system failures during critical modifications.

This fitting converts a 6AN male thread (AN6 designation) to a 5/16-inch SAE quick-disconnect male connection, allowing seamless integration between different fuel line standards commonly found in street rods, race vehicles, and modern fuel injection conversions. The quick-disconnect design eliminates the need for wrenches during installation or removal, reducing labor time and the risk of cross-threading. REDHORSE PERFORMANCE fittings are engineered for precision tolerances and durability under fuel system pressures, ensuring tight seals at both connection points and maintaining fuel system integrity whether running stock or modified fuel pumps.

This adapter is ideal for custom fuel system installations where legacy SAE equipment must mate with modern 6AN fuel line systems, or when routing fuel from tank to carburetors, EFI fuel rails, or auxiliary fuel components. Mechanics restoring classic vehicles with updated fuel systems and builders transitioning between 1980s–2000s fuel system standards will find this fitting essential for clean, professional installations. Verify your specific fuel line routing and pressure requirements before installation; this fitting suits applications up to typical fuel pump operating pressures when used with appropriate hose and clamping hardware.