EFI Adapter Fitting -6an Male to 5/16in SAE Quick

The EFI Adapter Fitting -6an Male to 5/16in SAE Quick from Russell is a precision fuel injection adapter designed for high-performance fuel systems requiring reliable, leak-free connections. This straight adapter bridges -6 AN (Air-Cooler Nipple) male fittings to 5/16-inch SAE quick-connect female ports, making it essential for fuel rail assemblies, fuel injection systems, and custom fuel line installations. Whether you're building a carbureted or EFI fuel system, this adapter ensures compatibility between AN-sized components and standard SAE quick-disconnect standards.

Constructed from aluminum with a black anodized finish, this fitting combines lightweight strength with superior corrosion resistance—critical for fuel system longevity and performance. The black anodized surface protects against oxidation while maintaining a professional appearance in engine bays. The straight design eliminates unnecessary bends, reducing pressure loss and turbulence in fuel delivery lines while simplifying installation routing. Russell's precision engineering ensures tight, consistent tolerances that prevent fuel seepage and pressure drops, maintaining optimal EFI system function and engine responsiveness.

Technicians and engine builders rely on this adapter for fuel system conversions, high-performance fuel rail upgrades, and custom fuel injection installations where AN-standard plumbing meets SAE quick-disconnect infrastructure. The compact design—weighing just 0.08 lbs—integrates seamlessly into tight engine compartments without adding bulk. Installation is straightforward: thread the -6 AN male end into your fuel rail or AN-equipped component and secure the 5/16-inch SAE quick-connect female end to matching quick-disconnect lines. Ideal for carburetor-to-EFI conversions, fuel system retrofits, and high-flow fuel delivery assemblies on street rods, race vehicles, and custom builds.