16AN Flare Plug 1/pkg Black

The 16AN Flare Plug 1/pkg Black from REDHORSE PERFORMANCE is an essential hydraulic fitting component for serious automotive builders and performance enthusiasts working with high-pressure fuel, oil, and coolant systems. Designed for custom engine builds, turbo installations, and modified cooling circuits, this flare plug terminates open AN-line ports safely and professionally. Whether you're finishing a race engine, installing a custom transmission cooler, or completing a fuel system upgrade, this single-piece plug delivers the reliability and appearance that separates show-quality work from amateur modifications.

Built to AN/JIC (37-degree) flare standard specifications, the 16AN fitting accepts 1-inch hose with a nominal ID of approximately 0.625 inches, making it compatible with applications running up to 400+ PSI depending on hose grade and system design. The black anodized aluminum construction provides corrosion resistance while maintaining a clean aesthetic that complements modern engine bay finishing. The flare-seat design creates a positive mechanical seal that requires no thread sealant tape, reducing contamination risk in critical fuel and oil circuits where particle ingress can damage injectors, pump internals, or bearing surfaces.

Mechanics and fabricators favor REDHORSE PERFORMANCE fittings for their precision manufacturing tolerances and flawless flare engagement—essential when pressurized systems demand leak-free connections on the first assembly. This plug fits any port outlet requiring AN16 termination, including fuel rails, oil filter adapters, radiator bypass blocks, and auxiliary fluid reservoirs. Keep a spare 16AN Flare Plug in your shop or vehicle for system repairs, prototyping, or test loops where temporary line blockage is necessary. One package contains a single plug; order multiple units if building redundant cooling loops or complex fuel delivery systems.