Gauge Adapter AN -6 Fem x -6 Male x 1/8in NPT

The Gauge Adapter AN -6 Fem x -6 Male x 1/8in NPT from ALLSTAR PERFORMANCE is a precision fitting engineered for fuel system diagnostics and pressure monitoring in custom and modified vehicles. This straight-passage adapter bridges AN6 (-6) female and male connections while introducing a 1/8-inch NPT gauge port, making it essential for racers, tuners, and serious mechanics who need accurate real-time fuel pressure data during engine tuning and troubleshooting. Whether you're upgrading to a high-flow fuel system, installing a standalone ECU, or verifying fuel delivery under load, this adapter provides a clean integration point without disrupting system flow.

Machined from aluminum and finished in black anodized coating, the gauge adapter delivers corrosion resistance and weight savings critical in performance builds. The straight design minimizes turbulence and pressure loss compared to ninety-degree fittings, preserving accurate gauge readings and protecting sensitive fuel injectors from flow disruption. The 1/8-inch NPT port accepts standard automotive fuel pressure gauges, sensor ports, and fuel rail ballasts with proven reliability in street and racing applications. The dual AN6 ends (female inlet, male outlet) allow seamless integration between existing fuel line components or manifold ports without requiring additional adapter chains.

This fitting is ideal for tuners upgrading carbureted or stock fuel systems to programmable fuel injection, as well as for engine swaps where OEM gauge ports don't align with modern diagnostic needs. Installation requires standard -6 AN hose or rigid fuel line and basic wrench tools; thread sealant on the NPT port ensures leak-free operation under pressure cycling. Compatible with aftermarket fuel rails, regulator bypass lines, and custom fuel system layouts on street machines, track cars, and marine engines. At just 0.04 pounds, it adds negligible weight while significantly improving your ability to monitor and validate fuel delivery performance during dyno sessions and road tuning.