Carb Adapter Fitting 6an to 9/16-24

The Carb Adapter Fitting 6AN to 9/16-24 from EARLS is an essential component for fuel system modifications on carbureted vehicles and custom engine builds. This adapter bridges the gap between modern braided fuel lines with AN (Army-Navy) fittings and traditional carburetor fuel inlet ports that use 9/16-24 threads. Whether you're installing an electric fuel pump, running braided stainless steel fuel lines, or integrating aftermarket fuel system components into a classic engine bay, this fitting ensures a leak-free, professional-grade connection that meets performance standards.

EARLS manufactures this carb adapter fitting with precision engineering to handle the fuel pressure demands of modern fuel delivery systems while maintaining compatibility with vintage carburetors. The 6AN designation refers to the hose size and fitting diameter on one end, while the 9/16-24 thread specification matches the standard inlet fitting found on most Holley, Edelbrock, and other popular carburetor designs. The compact design—measuring just 1.1 by 0.95 by 2.9 inches and weighing only 0.02 pounds—allows for flexible installation in tight engine compartments without compromising durability or flow characteristics. EARLS' reputation for quality ensures this adapter resists vibration loosening and maintains a secure seal under varying fuel pressure conditions.

This fitting is ideal for street rod builders, muscle car restoration projects, and performance engine swaps where fuel system modernization is critical. Mechanics and enthusiasts upgrading carbureted engines with fuel injection pumps, fuel pressure regulators, or contemporary plumbing systems will find this adapter indispensable for bridging legacy carburetor ports to modern fuel line standards. Installation is straightforward—simply thread the 9/16-24 end into the carburetor inlet and connect your 6AN braided hose to the opposite end, ensuring proper tightening to prevent fuel leaks. Compatibility spans most domestic and imported carburetors from the 1960s onward, making it a reliable choice for comprehensive fuel system upgrades.