AN To NPT 45 Degree -8 x 1/4in

The AN To NPT 45 Degree -8 x 1/4in adapter by ALLSTAR PERFORMANCE is a precision hose fitting designed for high-performance fuel, coolant, and fluid line applications in race and street vehicles. This 45-degree angle fitting bridges the gap between AN (Army-Navy) and NPT (National Pipe Thread) connections, solving common plumbing challenges when integrating aftermarket fuel systems, turbo setups, or custom cooling loops. Built for serious engine builders and tuners, this fitting delivers the reliability required in demanding automotive environments.

The -8 AN size (1/2-inch nominal diameter) connects to a 1/4-inch NPT port, making it ideal for transitioning between fuel rails, pressure regulators, and manifold ports without requiring costly custom drilling. The 45-degree angle reduces installation complexity in tight engine bays and minimizes stress on hose runs by allowing natural routing away from heat sources and moving components. Allstar Performance manufactures this fitting to strict tolerances, ensuring zero leakage and superior flow characteristics—critical when fuel pressure consistency directly impacts combustion and power output.

This adapter is essential for EFI conversions, supercharger installations, and LS-engine swaps where factory NPT-threaded ports must interface with modern braided stainless steel AN hoses. Mechanics and fabricators favor the 45-degree configuration for its ability to work around engine bay constraints while maintaining proper hose bend radii—preventing abrasion and premature hose failure. Compact at 4 inches in length and weighing just 0.06 lbs, it installs quickly without adding bulk, making it a smart choice for both street and competition builds.