1/2-20 I.F. to 6an Male Extended Adapter Fitting

The 1/2-20 I.F. to 6AN Male Extended Adapter Fitting from EARLS is a precision hydraulic line connector built for custom fuel, oil, and coolant systems in high-performance vehicles. Whether you're building a custom fuel delivery system, upgrading to an external transmission cooler, or running aftermarket fuel injection, this adapter bridges the gap between NPT pipe threads and modern braided hose standards. Mechanics and enthusiasts rely on EARLS fittings for leak-free connections in demanding applications where factory connections simply won't accommodate custom plumbing layouts.

This adapter features a 1/2-20 NPT internal female thread on one end and a 6AN male port on the opposite end, with an extended body design that provides clearance in tight engine bay environments. The extended configuration prevents clashing with headers, intake manifolds, or other components common in modified builds, while maintaining the tight sealing characteristics EARLS is known for. Constructed from forged aluminum alloy and precision-machined, the fitting delivers superior corrosion resistance and durability in both street and race applications where temperature and pressure fluctuations are constant.

This fitting excels in custom cooling system modifications, fuel system upgrades, and oil line reroutes on turbocharged and supercharged engines where original mounting points are incompatible with aftermarket components. It pairs seamlessly with EARLS braided stainless hose (available separately) and works with standard -6AN hose barbs, adapters, and clamps found in any serious shop. Installation is straightforward: apply thread sealant to the NPT end, screw into your manifold or block port, and connect your braided line to the 6AN male end with the appropriate push-lock fitting or crimp collar. Verify adequate clearance before final torque to avoid contact with moving parts or hot surfaces.