AN To NPT 45 Degree -6 x 3/8in

The AN To NPT 45 Degree -6 x 3/8in fitting from ALLSTAR PERFORMANCE is a critical hydraulic and fuel system adapter designed for builders and mechanics who demand precise fluid routing in high-performance engine builds. This 45-degree elbow adapter bridges two industry-standard thread formats—AN (Army-Navy) and NPT (National Pipe Taper)—allowing seamless integration between modern aftermarket components and legacy or mixed plumbing configurations. Whether you're fabricating a custom fuel line setup, upgrading a cooling system, or integrating a remote oil filter adapter, this fitting eliminates the need for multiple adapters or improvised solutions that compromise reliability.

Engineered with aluminum construction and a 45-degree design, the AN To NPT adapter reduces turbulence and pressure drop compared to sharp 90-degree bends, improving flow efficiency in fuel and coolant circuits. The -6 AN side features the compact, lightweight characteristics that AN fittings are prized for, while the 3/8-inch NPT port accommodates standard industrial and engine block connections found on blocks, manifolds, and gauge bosses. ALLSTAR PERFORMANCE's precision manufacturing ensures tight tolerances that prevent seepage at high pressures, critical when working with modern fuel injection systems operating at 40+ PSI or high-temperature cooling systems. The compact 2.05-inch length allows installation in tight engine bay environments without interfering with adjacent components.

This adapter is essential for street rods, vintage restorations, LS engine swaps, and custom performance builds where mixing modern fuel-injection-ready components with original or remanufactured engine blocks is necessary. Fabricators and engine builders rely on the 45-degree geometry to route lines away from headers, carburetors, and intake manifolds without compromising accessibility for future service. Install with appropriate thread sealant (PTFE tape for NPT, thread-locking compound for AN) and torque fittings to manufacturer specifications to ensure leak-free operation across temperature and pressure cycles. Compatible with gasoline, diesel, coolant, and power steering fluid systems.