AN To NPT Straight -16 x 3/4in

The AN to NPT straight -16 x 3/4in adapter by ALLSTAR PERFORMANCE is a precision hydraulic and pneumatic fitting designed to bridge two of the most common thread standards in high-performance automotive and motorsports applications. This straight adapter connects -16 AN (Army-Navy) male ports to 3/4 inch NPT (National Pipe Thread) male ports, making it essential for custom fuel systems, transmission coolers, air suspension setups, and engine bay fluid transfer lines. Whether you're building a competition race car, restoring a classic hot rod, or upgrading a street performance vehicle, this fitting provides a reliable mechanical transition between incompatible thread standards without flow restriction or leakage risk.

Constructed from aluminum and finished in hard black anodize, this adapter offers excellent corrosion resistance while remaining lightweight for applications where mass matters. The black anodized coating protects against oxidation in engine bays exposed to heat cycles, fuel vapor, and moisture, while the aluminum construction keeps weight down compared to steel equivalents. The straight configuration eliminates angular complexity, reducing fitting count in tight spaces and minimizing potential leak points. Precision machining ensures proper thread engagement and a leak-free seal when paired with appropriate thread sealant or PTFE tape on the NPT side, delivering the durability expected in professional racing and serious street performance builds.

This adapter is ideal for fabricators, performance shops, and enthusiasts transitioning between older NPT-threaded components and modern -16 AN hose systems. Installation requires standard wrenches or fitting wrenches appropriate to each end size; the -16 AN side pairs with standard -16 AN hoses and fittings, while the 3/4 NPT side threads directly into female NPT ports on tanks, radiators, filters, and transmission pans. Verify your system pressure and fluid compatibility before installation, as AN fittings typically handle high-pressure applications up to 4000 PSI depending on hose and component ratings. This single-piece aluminum adapter is sold individually, allowing builders to source the exact quantity needed for their custom plumbing layout.