Female AN to Male AN Flare Union Adapter -10

The Female AN to Male AN Flare Union Adapter -10 by Vibrant Performance is an essential fitting for custom fuel, oil, and coolant line routing in high-performance automotive applications. Mechanics and engine builders rely on this adapter when consolidating multiple AN-sized hose runs or transitioning between incompatible port configurations on modified engines, fuel systems, and cooling circuits. Whether you're upgrading a fuel delivery system, installing an external oil cooler, or fabricating a custom intake manifold setup, this -10 AN adapter bridges the gap between female and male flare connections with precision and durability.

Constructed from aluminum alloy with a crimp-compatible flare design, the Female AN to Male AN Flare Union Adapter -10 maintains full flow integrity and pressure rating suitable for fuel systems operating at 100+ psi and oil circuits handling sustained temperatures. The flare union design eliminates the need for separate ferrules and reduces leak points—a critical advantage when working with aggressive fuel blends, high-temperature coolants, or pressurized reservoir feeds. The -10 designation corresponds to a 5/8-inch outer diameter hose connection, a common specification in LS swaps, turbo installations, and aftermarket fuel pump conversions where AN braided stainless hose is the standard.

Technicians installing fuel rails with offset inlet ports, adapting catch cans to vacuum blocks, or routing return lines through engine bays will find this adapter indispensable for maintaining system pressure and reliability. It pairs seamlessly with Vibrant Performance braided hose, stainless fittings, and compression-style connectors, making it a trusted choice for street machines, weekend warriors, and full-build restorations. Installation requires only standard flare nut wrenches and basic plumbing knowledge; torque specs follow industry-standard 4-6 foot-pound guidelines for aluminum fittings to prevent galling.