16AN Female - 12AN Male Reducer Black

The 16AN Female to 12AN Male Reducer in Black from REDHORSE PERFORMANCE is an essential hydraulic adapter for builders stepping down line sizes in fuel, oil, coolant, or boost systems. Whether you're retrofitting a fuel rail, integrating a smaller secondary fuel line, or connecting mismatched hose fittings in a turbo setup, this reducer bridges the gap between 16 AN and 12 AN ports without compromise. Precision-engineered for high-pressure applications, it eliminates the need for custom fabrication and ensures leak-free connections on street cars, track builds, and motorsport platforms alike.

Machined from aluminum and anodized black, this adapter features a female 16 AN port on one end and a male 12 AN fitting on the opposite side, allowing smooth flow transition while maintaining full structural integrity under pressure. The black anodizing protects against corrosion and oxidation in harsh underhood environments, while the precision threads ensure hand-tight assembly or wrench-torqued security without galling. The compact 3.8-inch length and lightweight 0.17-pound design make it ideal for tight engine bay layouts where space constraints demand efficiency—critical for modern turbocharged swaps, custom cooling systems, or boost plumbing where real estate is at a premium.

Mechanics and performance enthusiasts favor REDHORSE reducers for OEM-quality durability without the OEM price tag. This adapter pairs seamlessly with REDHORSE hose, fittings, and manifolds, or integrates into mixed-brand systems where standardization isn't possible. Installation requires only basic hand tools and knowledge of AN line assembly—apply thread sealant or PTFE tape to male threads, thread by hand first to avoid cross-threading, then snug to finger-tight plus one-quarter turn with a wrench. Ideal for LS swaps, fuel cell integrations, intercooler piping, and any custom plumbing where 16 AN and 12 AN systems must communicate reliably.