-8AN Male to -8AN Female Union Adapter Fitting

The Vibrant Performance -8AN Male to -8AN Female Union Adapter Fitting (Part Number 16488) is a straight-through hose adapter designed to connect two -8AN male flare fittings in fuel, coolant, and fluid transfer systems. Constructed from aluminum and finished in black anodized coating, this union adapter provides a straightforward solution for high-performance automotive and fluid system applications where two male connectors require union.

The -8AN designation refers to the JIC 37-degree flare standard, a proven specification for pressurized fluid systems in motorsports and performance vehicles. The straight configuration eliminates flow restriction and maintains full nominal diameter through the connection point. Inclusion of a 1/8-inch NPT gauge port allows integration of pressure-monitoring instrumentation, making this fitting ideal for fuel systems, coolant loops, and hydraulic circuits where real-time pressure data informs system diagnostics and tuning decisions. Black anodized aluminum construction offers corrosion resistance and weight efficiency critical in racing and off-road environments.

This adapter serves builders and technicians assembling custom fuel systems, upgrading coolant pathways on modified engines, or consolidating scattered gauge ports into a single monitored junction. The union configuration is essential when existing hose routes require connection of two pre-fitted male lines without disassembly. Vibrant Performance union adapters are widely specified in engine bay renovation, turbo system integration, and precision cooling upgrades where connection reliability and pressure integrity are non-negotiable.

Each fitting is individually tested and sold as a single unit. Compatibility with all -8AN male JIC flare line ends ensures broad application across domestic and imported platforms. Proper torque and thread sealant on the gauge port connection are recommended during installation to prevent leakage under operating pressure.