16AN Male to 12AN Male Reducer Black

The REDHORSE PERFORMANCE 16AN Male to 12AN Male Reducer Black is a straight adapter fitting engineered for high-flow hydraulic and fuel system applications where line size reduction is required. This aluminum adapter bridges larger 16 AN (AN16) ports to smaller 12 AN (AN12) connections, making it essential for custom fuel systems, turbo feed lines, and modified engine bay plumbing where space constraints or system architecture demands a seamless step-down transition. Whether you're building a competition fuel system, retrofitting a turbocharger feed line, or consolidating multiple fuel rails, this reducer ensures leak-free connections without sacrificing flow capacity.

Manufactured from aerospace-grade aluminum and finished in black anodizing, the 919 Series reducer delivers corrosion resistance and durability under high-pressure fuel and coolant environments. The straight-port design minimizes turbulence and pressure loss compared to 90-degree elbows, preserving fuel delivery efficiency across the transition. Black anodizing not only protects against oxidation and chemical attack but also provides a clean aesthetic finish that integrates seamlessly into modern engine bay builds. The precision-machined male threads on both ends ensure tight, vibration-resistant seals when paired with matching AN fittings and Teflon tape or thread sealant, critical for systems operating at fuel pressures exceeding 100 psi.

This fitting is ideal for fabricators, performance shops, and DIY enthusiasts upgrading fuel delivery on turbocharged, supercharged, or high-horsepower naturally aspirated engines. It pairs seamlessly with any AN16 fuel line or port and accepts standard AN12 hose assemblies, making it compatible with most aftermarket fuel rails, surge tanks, and turbo feed systems. Install with a wrench on both ends to prevent thread stripping, and always use appropriate thread sealant for fuel applications. Compact dimensions allow routing through tight engine compartments without interference, while the 0.21 lb weight has zero meaningful impact on vehicle balance or chassis tuning.