8AN Female Swivel To 1/4NPT Male Adapter STR

The 8AN Female Swivel to 1/4NPT Male Adapter STR from REDHORSE PERFORMANCE is engineered for builders and mechanics who demand reliable hydraulic and pneumatic connections in custom fuel, coolant, and brake systems. This straight-port adapter bridges AN (Army-Navy) JIC fittings with NPT (National Pipe Thread) ports, making it indispensable when integrating aftermarket fuel injection systems, transmission coolers, turbo supply lines, and air suspension components into vehicles with mixed thread standards. Whether you're fabricating a high-flow fuel system on a turbocharged engine or routing brake fluid through a custom chassis, this adapter eliminates the need for multiple conversion pieces.

The 8AN female swivel port accepts industry-standard AN hose barbs and crimped-hose assemblies, while the 1/4NPT male threads directly into block-mounted ports, manifolds, or radiator fittings without additional adapters. The swivel design accommodates hose routing angles up to 360 degrees, reducing stress on crimps and preventing kinks during engine bay installation—critical when space is tight in modified engine bays. REDHORSE PERFORMANCE's aluminum construction keeps weight minimal (0.085 lbs) while maintaining pressure ratings suitable for fuel injection systems, coolant circulation, and low-pressure pneumatic applications. The straight-port configuration ensures maximum flow without dead legs, a detail that matters when precision fuel delivery or cooling efficiency affects performance and reliability.

This adapter is ideal for fuel system builders, engine swap specialists, and tuners working on LS swaps, stroker builds, and turbo conversions where OEM port locations don't match modern aftermarket components. It works seamlessly with fuel rails that feature AN outlets, braided stainless hose assemblies, and factory NPT block fittings on both carbureted restomod projects and EFI retrofits. Installation requires only a wrench—secure the NPT male threads with appropriate torque specs (typically 12–18 ft-lbs for aluminum blocks) and crimp your AN hose to the swivel female end. Verify pressure ratings and fluid compatibility before use to ensure safe operation in your specific application.