Inverted Flare Fitting

The Edelbrock inverted flare fitting (MPN 8090) is a precision carburetor inlet adapter designed for mechanics and enthusiasts building or rebuilding fuel systems on classic and performance engines. This straight brass fitting serves as the critical connection between fuel supply lines and carburetor inlets, ensuring a leak-free seal under the pressures and vibrations of engine operation. Whether you're restoring a vintage hot rod, upgrading a street machine, or diagnosing fuel delivery issues on an existing carb setup, a quality inverted flare fitting is non-negotiable for system reliability.

This inverted flare fitting features a 3/8-inch inverted flare female connection on one end and a 5/8-20-inch male port on the carburetor side, manufactured from brass for corrosion resistance and fuel compatibility. The inverted flare design—also called a bubble flare—creates a self-centering cone joint that distributes clamping force evenly across the flare surface, reducing the risk of thread galling and fuel weeping common with inferior fittings. The straight configuration eliminates elbows and potential pinch points in the fuel line, simplifying installation while maintaining maximum flow and minimizing turbulence in the fuel path.

Carburetor swaps, fuel system repairs, and performance upgrades demand tight tolerances and durable connections; this Edelbrock fitting is the industry standard for Carter carburetor applications and similar small-block and big-block fuel systems. Installers should verify carburetor inlet port size and fuel line diameter before ordering and always use new sealing washers during assembly to ensure a dry, vibration-proof joint. At just 0.09 lbs and compact dimensions, it integrates seamlessly into space-constrained engine bays while delivering the reliability that separates amateur builds from professional restorations.