AN To NPT Straight -16 x 3/4in

The AN To NPT Straight -16 x 3/4in adapter by ALLSTAR PERFORMANCE is an essential hydraulic and fuel line fitting for high-performance engine builders, race mechanics, and street rod enthusiasts who demand precision fluid routing. This straight adapter bridges two industry-standard thread patterns—AN (Army-Navy) and NPT (National Pipe Thread)—allowing seamless integration between modern aftermarket fuel systems, cooling circuits, and custom plumbing layouts. Whether you're fabricating a fuel cell setup, upgrading to a performance fuel pump system, or adapting transmission cooler lines, this compact fitting eliminates the need for multiple hose assemblies and reduces potential leak points.

The -16 AN port (standard 16 size in the AN nomenclature) mates with 3/4-inch NPT threads, providing a secure, leak-free connection when properly sealed with PTFE thread tape or pipe dope. ALLSTAR PERFORMANCE engineered this fitting with precision machining to ensure tight tolerances and consistent thread engagement across production runs. The straight configuration (zero-degree design) simplifies installation in tight engine bay spaces and maintains optimal flow characteristics for fuel, coolant, and transmission fluid applications. At just 0.16 pounds, this lightweight aluminum or steel construction minimizes parasitic weight while delivering the durability required in high-vibration racing environments and street performance builds.

This adapter is ideal for drag racing, circle track, autocross, and weekend cruiser builds where custom fuel systems and modular plumbing require cross-platform thread compatibility. Professional shops and DIY builders rely on ALLSTAR fittings to maintain consistent quality across engine combinations and fuel delivery architectures. Installation requires basic wrench work—tighten the AN side with a standard 16-size wrench while securing the NPT side with a 3/4-inch pipe wrench, ensuring both sides are fully seated. Always verify hose or line compatibility before assembly, and inspect threads for damage to guarantee a watertight seal on your first attempt.