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

The AN To NPT 45 Degree -4 x 1/8in fitting from Allstar Performance is an essential adapter for routing fuel, oil, and coolant lines in high-performance engine builds. This fitting connects two standard thread types—JIC AN (Army-Navy) and NPT (National Pipe Thread)—allowing for compatibility between components with different port configurations.

Designed with precision engineering, the 45-degree angle helps prevent leaks caused by vibration and optimizes hose routing in tight engine compartments. The -4 sizing indicates compatibility with a 1/4-inch hose, while the 1/8-inch NPT thread is suitable for standard gauges and sensors. Allstar Performance ensures that this fitting provides a reliable, leak-free seal when installed with the appropriate thread sealant.

This fitting is particularly beneficial for builders working on EFI conversions, fuel system upgrades, and custom cooling systems across various vehicle platforms. Its compact design allows for easy installation in crowded engine bays, making it a practical choice for both competition and street applications.