#6 Flare Plug

The #6 Flare Plug is a precision hydraulic and pneumatic fitting designed for high-pressure fluid line systems where secure, leak-free connections are essential. This hex head aluminum plug seals 6 AN (Aircraft National) port openings, making it indispensable for custom fuel systems, brake lines, and cooling circuits in performance vehicles, race cars, and industrial applications. Whether you're building a custom fuel system or maintaining existing hydraulic infrastructure, this flare plug provides the reliability and durability that mission-critical systems demand.

Constructed from red anodized aluminum, the #6 Flare Plug combines lightweight durability with corrosion resistance. The hex head design allows secure installation using standard wrenches, and the flare fitting style creates a metal-to-metal seal that prevents thread stripping and system failures under pressure. The AN 6 standard ensures compatibility with industry-standard braided hose, hard line tubing, and system components rated for 6 AN connections. Anodized finish protects against oxidation and extends service life in demanding environments where moisture and temperature fluctuations occur.

Professional mechanics, fabricators, and enthusiasts rely on #6 Flare Plugs when blocking off unused ports in fuel rails, transmission coolers, heater systems, and aftermarket manifolds. This single-unit plug works seamlessly with existing 6 AN line assemblies and adapters, making it ideal for system customization, repair, or shutdown procedures. Installation is straightforward—simply thread into the matching 6 AN female port using appropriate wrenches to achieve proper torque without over-tightening, ensuring a secure connection that holds under sustained pressure and temperature cycling.