AN To NPT Straight -12 x 1/2in

The ALLSTAR PERFORMANCE AN to NPT Straight -12 x 1/2in adapter (ALL 49520) is a precision-engineered fitting designed to bridge AN (Army-Navy) and NPT (National Pipe Thread) port systems in high-pressure hydraulic and fuel line applications. This aluminum adapter converts a -12 AN male port to a 1/2-inch NPT male port, enabling seamless compatibility between different standardized connection systems commonly found in race engines, performance fuel systems, and custom hydraulic assemblies.

Constructed from aluminum and finished in black anodized coating, this straight-style adapter resists oxidation and maintains dimensional stability across thermal cycles typical in engine compartments and high-performance applications. The -12 AN size (3/4-inch OD) handles substantial flow rates, while the 1/2-inch NPT connection accommodates standard industrial and marine plumbing components. The straight configuration (no elbows or offsets) minimizes internal turbulence and pressure drop, critical factors in fuel delivery systems where consistency matters.

This fitting suits builders transitioning between equipment manufactured to different port standards—particularly those integrating legacy NPT-threaded components into modern AN-based fuel rails, coolant systems, or transmission coolers. Engine builders, performance shops, and custom fabricators rely on ALLSTAR adapters to maintain seal integrity and pressure ratings across system transitions. The compact footprint (2.35 x 1.75 x 4 inches) fits tight engine bays without requiring custom brackets or workarounds.