#8 x 9/16-18 (#6) Radius O-Ring Fitting

The FRAGOLA #8 x 9/16-18 (#6) Radius O-Ring Fitting (Part #495102) is a precision aluminum adapter designed to connect 8 AN male ports to 6 AN male O-ring ports in high-pressure hydraulic and fuel line systems. This straight-configuration fitting delivers reliable, leak-free connections in applications ranging from race car fuel systems and transmission cooler lines to marine hydraulic systems and industrial equipment where space constraints and size reduction are critical.

Machined from lightweight aluminum and finished in blue anodized coating, this fitting combines corrosion resistance with minimal weight addition to your system. The O-ring face seal (OFS) design eliminates the need for traditional threaded seals, providing superior vibration resistance and reduced assembly torque requirements compared to JIC or NPT alternatives. The radius port configuration ensures smooth flow transitions that minimize turbulence and pressure drop across the adapter, a critical advantage in performance fuel delivery and cooling circuits where efficiency directly impacts engine management and component longevity.

This adapter is essential for builders and technicians downsizing fuel or hydraulic lines without compromising system integrity. The 8 AN to 6 AN reduction accommodates space-limited engine bays, tight frame rails, and compact transmission tunnels while maintaining full pressure rating across the transition. Each fitting ships individually, allowing precise line configuration for custom fuel systems, turbo cooler setups, and aftermarket transmission installations where proper hose sizing and fitting selection directly affect reliability under sustained load.