8an EFI Male Fitting to 3/8in SAE Quick-Discon.

The 8AN EFI Male Fitting to 3/8in SAE Quick-Disconnect from REDHORSE PERFORMANCE is a precision fuel system adapter engineered for custom EFI fuel injection setups on modified vehicles. This fitting bridges AN (Army Navy) -8 threaded connections to SAE quick-disconnect couplings, making it essential for builders transitioning between fuel line standards or integrating aftermarket fuel rails, pumps, and regulators. Whether you're installing a carbureted-to-EFI conversion or upgrading fuel delivery on a high-performance build, this adapter eliminates the need for multiple fittings or custom fabrication.

REDHORSE Performance fittings are manufactured to strict SAE and AN standards, ensuring leak-free connections under fuel system pressure and vibration. The 8AN male thread (1.307-16 UNF standard) provides secure engagement with AN female ports, while the 3/8-inch SAE quick-disconnect coupler allows rapid connection and disconnection without fluid loss—a critical feature for fuel system diagnostics and component swaps. Precision machining and compatible materials resist fuel degradation and maintain structural integrity across temperature cycling common in engine bays, particularly in turbocharged or supercharged applications where underhood heat climbs significantly.

This fitting suits builders working with aftermarket fuel injection controllers, programmable fuel management systems, and modular fuel system layouts where quick-connect convenience outweighs traditional hard-plumbed lines. Mechanics servicing turbocharged LS swaps, small-block Chevrolet fuel rail upgrades, or Mustang Coyote engine conversions will find this adapter indispensable for maintaining SAE-standard pump discharge lines while protecting EFI rail connections. Installation is straightforward: apply thread sealant (PTFE or fuel-compatible thread tape) to the 8AN male threads and torque to OEM specifications for your fuel rail or regulator inlet port. Compatible with both gasoline and E85 fuel systems when paired with appropriate fuel-rated hose and couplers.