AN To NPT Swivel 90 Deg -4 x 1/4in

The AN To NPT Swivel 90 Deg -4 x 1/4in fitting from Allstar Performance is a critical adapter for custom fuel, oil, and coolant systems in performance and race vehicles. Whether you're building a custom fuel injection setup, upgrading engine plumbing on a high-horsepower build, or retrofitting hydraulic lines, this swivel connector bridges the gap between AN (Army-Navy) and NPT (National Pipe Thread) standards. It's an essential component for mechanics and fabricators who need reliable, leak-free connections in demanding automotive applications.

The 90-degree swivel design allows flexible line routing in tight engine bays without kinking or stressing hoses—critical when space is limited in modified or supercharged applications. The -4 AN size delivers adequate flow for most fuel and cooling circuits, while the 1/4 inch NPT port accommodates common gauge ports, sensor bungs, and aftermarket manifolds. The swivel feature means you can rotate the fitting to the optimal angle during installation, reducing the need for custom fabrication and ensuring proper thread alignment without cross-threading. This fitting is engineered for reliability under pressure cycling and temperature extremes typical in motorsports and street performance environments.

Fabricators, engine builders, and DIY enthusiasts benefit most from this adapter when designing modular fuel systems, oil cooler circuits, or coolant bypass setups. It's ideal for converting older NPT-based components to modern AN line standards—a common task when upgrading carbureted engines to fuel injection or installing aftermarket gauges. Installation is straightforward: apply thread sealant to the NPT end and torque to the appropriate spec for your system pressure. Ensure you're using -4 AN hoses and fittings on the opposite side for complete system integrity and flow consistency across your build.