AN To NPT 90 Degree -12 x 3/4in

The AN to NPT 90 degree -12 x 3/4in adapter from Allstar Performance is an essential fitting for automotive enthusiasts and professional mechanics working with custom fuel, coolant, or hydraulic systems. This 90-degree elbow connector bridges two industry-standard thread types—AN (Army-Navy) fittings on one end and NPT (National Pipe Thread) on the other—making it indispensable for fabricating tight-tolerance fuel lines, brake systems, and transmission cooler circuits where space constraints demand compact routing.

The -12 AN size corresponds to a 3/4-inch hose connection on the AN side, while the NPT side matches standard 3/4-inch pipe threads found on most factory and aftermarket components. The 90-degree configuration allows fluid lines to turn without adding bulk or creating stress points that can lead to leaks under pressure. Allstar Performance's machined aluminum construction with precision porting ensures minimal turbulence and maximum flow efficiency—critical factors when fuel delivery or coolant circulation must remain unobstructed.

This adapter is particularly beneficial for those building fuel-injected LS swaps, upgrading carburetor feed lines, or plumbing custom cooling systems. It eliminates the need for multiple connectors and simplifies system integration in tight engine bays. The crimp-compatible AN end accepts standard push-lock hose or braided stainless lines, while the NPT end secures directly into component ports with traditional thread sealant, ensuring a reliable connection.