AN To NPT Straight -6 x 1/4in

The AN to NPT Straight -6 x 1/4in adapter from ALLSTAR PERFORMANCE is a precision fluid-line connector engineered for high-performance hydraulic and fuel system applications. This straight adapter bridges AN (Army-Navy) -6 male fittings to 1/4-inch NPT (National Pipe Thread) male ports, making it essential for custom plumbing in racing engines, hydraulic brake systems, and fuel delivery circuits. Whether you're fabricating a custom fuel system, upgrading brake lines, or connecting aftermarket components, this adapter eliminates the need for custom machining and ensures leak-free performance under pressure.

Constructed from aluminum and finished with black anodized coating, the AN to NPT Straight -6 x 1/4in adapter combines corrosion resistance with lightweight durability. The anodized treatment protects against oxidation and chemical degradation, critical in fuel and hydraulic environments where moisture and petroleum products can compromise fittings. The straight-flow geometry minimizes turbulence and pressure loss, maintaining system efficiency across high-flow applications. The NPT male thread format creates a secure, tapered seal that prevents weeping and enhances reliability in demanding motorsports and industrial settings.

This fitting is ideal for fabricators, engine builders, and motorsports enthusiasts who demand compatibility between legacy NPT infrastructure and modern AN quick-disconnect systems. Installation requires appropriate thread sealant (PTFE tape or anaerobic compound) on the NPT end to ensure a pressure-tight seal. The compact 2.35-inch length and minimal weight (0.04 lbs) make it suitable for tight engine bays and weight-sensitive applications. Compatible with all standard -6 AN hose assemblies and NPT-threaded ports on fuel rails, filters, coolers, and chassis fittings, this adapter delivers OEM-level reliability at a fraction of custom-machining costs.