AN to NPT Straight #4 x 1/4

The AN to NPT Straight #4 x 1/4 adapter from Triple X Race Components is designed for connecting AN (Army-Navy) male fittings to NPT (National Pipe Thread) female ports. This adapter is particularly useful for custom fuel, oil, and coolant line systems in modified vehicles, allowing builders to integrate aftermarket components seamlessly.

The straight design of this adapter ensures a zero-degree flow direction, minimizing turbulence and pressure drop in fluid delivery systems. It is engineered to provide reliable connections under high pressure, making it suitable for applications where precision is critical. The #4 AN size corresponds to 1/4-inch inner diameter hose compatibility, while the 1/4-inch NPT female port is a common size for engine block passages and fuel pump outlets.

This adapter is ideal for builders fabricating custom fuel rails, upgrading to remote-mount fuel regulators, or adapting supply lines to existing engine ports. Its compact profile (1.9 x 0.8 x 2.8 inches) fits well in tight engine bays and custom manifold designs, making it a versatile choice for various automotive applications.