-12an O-Ring to -16an Flare Fitting - Blue

The -12AN O-Ring to -16AN Flare Fitting in Blue by MEZIERE is a precision adapter designed for high-performance fuel, coolant, and fluid delivery systems in modified vehicles. This fitting bridges two common AN line standards, allowing seamless integration when step-up sizing is required between system components. Built for serious enthusiasts running turbocharged engines, supercharged platforms, or custom cooling loops, this adapter reduces potential leak points in critical circuits.

Engineered with an O-ring seal on the -12AN side and a flare connection on the -16AN side, this fitting accommodates both modern push-lock and traditional flared-line architectures. The design is robust enough to handle sustained pressure from high-flow fuel pumps and turbo coolant circuits without seepage or degradation. The blue anodized finish provides corrosion resistance while serving as a visual identifier in complex engine bays, making future service and troubleshooting more efficient.

Mechanics and fabricators rely on MEZIERE adapters when upgrading fuel systems for forced-induction builds, installing aftermarket water pumps, or custom plumbing turbo return lines. This fitting is essential for anyone transitioning from OEM rubber hose assemblies to hardline circuits or when combining legacy and modern AN components in tight engine compartments.