12AN Flare Plug 1/pkg Black

The 12AN Flare Plug from REDHORSE PERFORMANCE is a precision hydraulic fitting designed for high-performance fuel, oil, and coolant systems in modified vehicles. This single-pack connector is essential for builders and mechanics working with custom fuel injection systems, turbocharger plumbing, and race-spec fuel delivery lines where reliable, leak-free connections are critical.

The flare plug features a robust flare-seat design that creates a metal-to-metal seal when torqued into matching 12AN female fittings. Its black anodized aluminum finish resists corrosion in engine bays exposed to fuel vapor, coolant mist, and salt spray, while maintaining conductivity for electrical grounding in fuel systems. The compact form factor—measuring 2.835 x 1.405 x 4.423 inches and weighing just 0.106 lbs—ensures it fits tight spaces common in custom intake manifolds, block ports, and fuel rail dead-legs without requiring adapters or spacers.

Whether you're capping off an unused port on a re-routed fuel system, blocking a factory port during a carbureted conversion, or sealing custom drilled passages in a billet intake, this flare plug provides a reliable closure. Ideal for street machines, track cars, and LS or small block applications, it is a must-have for any performance enthusiast looking to ensure optimal fluid management.