#6 X 7/8-14 (#10) Radius O-Ring Fitting

The FRAGOLA #6 X 7/8-14 (#10) Radius O-Ring Fitting is a precision-engineered adapter designed for high-flow hydraulic and fuel line systems. This straight-path fitting connects a #6 AN male port to a #10 AN male O-ring port, making it an essential component in custom fuel systems, forced induction setups, and performance cooling circuits. Constructed from aluminum and finished in blue anodized coating, the fitting combines light weight with corrosion resistance while maintaining the structural integrity demanded by pressurized applications.

The radius O-ring design provides superior sealing compared to older flare-type connections, eliminating the need for ferrule fittings and reducing the risk of fluid weeping under sustained pressure. The #6 to #10 AN size transition accommodates mid-range flow requirements typical of turbocharged engine fuel delivery, supercharger bypass lines, and transmission cooler feeds. The straight configuration eliminates unnecessary bends and reduces system volume, allowing for faster pressure response and more efficient fluid transfer. At just 0.05 lbs, the aluminum construction keeps weight to a minimum without sacrificing durability.

This fitting serves professionals and enthusiasts building or maintaining performance fuel systems, race-spec cooling circuits, and precision hydraulic installations. Builders working with carbureted and fuel-injected engines, transmission oil coolers, and aftermarket fuel pumps rely on FRAGOLA fittings to ensure leak-free connections under load. The adapter's compact footprint (2 x 1.15 x 4.3 in) makes it suitable for engine bays with space constraints. Whether upgrading from old-style flare fittings or integrating new components into an existing AN system, this adapter simplifies the transition between different port sizes.

FRAGOLA's reputation in performance fuel system components stems from consistent application of O-ring sealing technology and meticulous tolerance control. The blue anodized finish offers visual distinction on the workbench and under the hood while providing a durable protective barrier against oxidation. This single adapter unit (SKU FRG495113, UPC 822320022957) ships ready to install, with no additional components or machining required.