10AN STR male Adapter 3/4in NPT Male Blue

The 10AN STR male adapter 3/4in NPT male blue from Redhorse Performance is an essential fitting for custom fuel, oil, and coolant line systems in high-performance engine builds and modified vehicles. This adapter bridges AN (Army-Navy) port standards to NPT (National Pipe Thread) connections, making it indispensable when integrating aftermarket fuel rails, oil coolers, transmission coolers, and hydraulic systems into existing factory or custom manifold ports. Whether you're tuning a LS engine swap, upgrading a carbureted classic, or plumbing a turbocharged application, this straight adapter solves real-world port compatibility challenges without requiring custom machining.

Constructed with precision engineering, the 10AN STR male adapter features a 10 AN male port on one end and a 3/4 inch NPT male port on the other, allowing seamless connection between different threading standards commonly found in performance plumbing. The straight (STR) configuration eliminates bends and reduces installation footprint in tight engine compartments, while the anodized blue finish provides corrosion resistance and visual identification within color-coded plumbing systems. At just 0.106 lbs and measuring 2.835 by 1.405 by 4.423 inches, this compact fitting integrates cleanly into custom line runs without adding unnecessary weight or bulk to your fuel system or cooling circuit.

Mechanics, engine builders, and DIY enthusiasts benefit from this adapter when retrofitting performance components into vehicles with mixed port standards. It's particularly useful in fuel system upgrades where modern AN-spec fuel rails and filters need to mount to factory NPT bungs, or when adding aftermarket oil cooling systems to engines without factory provisions. Proper installation requires compatible AN hose fittings and NPT thread sealant or PTFE tape on the male NPT side to ensure leak-free operation under fuel system or cooling circuit pressure.