#4 Male x 1/8 FPT 90 Deg Gauge Adapter Inline

The FRAGOLA #4 Male x 1/8 FPT 90 Degree Gauge Adapter Inline is a precision aluminum fitting designed to connect AN fuel system components to NPT threaded gauge ports at a 90-degree angle. This blue anodized adapter bridges the gap between 4 AN male threads and 1/8-inch NPT female ports, making it essential for fuel pressure gauges, temperature sensors, and diagnostic instrumentation in high-performance fuel systems. The 90-degree configuration allows gauge placement perpendicular to the main fuel line, keeping instrumentation compact and out of the flow path.

Constructed from aluminum and finished with blue anodizing, this adapter resists corrosion while providing visual identification in complex fuel systems. The inline design minimizes disruption to fuel flow, and the 90-degree bend enables clean routing for dash-mounted gauges in custom fuel systems, race vehicles, and performance engine builds. The adapter measures 2.95 inches in length with a compact 0.8-inch profile, fitting easily into tight engine bay spaces. Each piece is manufactured to FRAGOLA's quality standards, ensuring consistent thread fit and leak-free performance under pressure.

This adapter serves builders and technicians who need reliable gauge installation in fuel systems running AN fittings. Common applications include fuel pressure measurement on carbureted engines, EFI fuel rails, aftermarket fuel system plumbing, and diagnostic setups during engine tuning and testing. The combination of AN main-line compatibility and NPT gauge thread standardization makes this adapter a practical bridge between modern fuel system standards and conventional gauge instrumentation. Single-unit purchase allows customization of gauge placement without committing to complete pre-assembled fuel manifolds.