16AN Male to 12AN Male Reducer Black

The REDHORSE PERFORMANCE 16AN Male to 12AN Male Reducer Black is a precision hydraulic adapter designed for custom fuel, oil, and coolant systems in high-performance vehicles. This fitting serves as a critical transition component when downsizing from larger 16AN (JIC -16) hose lines to smaller 12AN (-12) connections, making it essential for builders who need flexibility in system plumbing layouts. Whether you're installing a custom fuel rail, upgrading an engine bay cooling system, or adapting legacy components to modern performance standards, this reducer eliminates the need for compromised hose runs or improvised connections.

Constructed from aluminum with a black anodized finish, this adapter combines durability with corrosion resistance—critical for underhood environments exposed to heat cycles, fuel vapors, and moisture. The male-to-male configuration on both ends allows seamless integration into existing hose assemblies with standard AN fittings, while the precision-engineered bore ensures minimal turbulence and optimal flow characteristics for fuel delivery and coolant circulation. REDHORSE PERFORMANCE's 919-16-12-2 design adheres to SAE J518 standards, guaranteeing compatibility with industry-standard -16 and -12 JIC hose and fitting systems used across professional racing and street performance applications.

This reducer benefits engine builders, fuel system specialists, and DIY enthusiasts tackling custom loop plumbing, turbo fuel setups, and complete engine bay renovations. At just 0.21 lbs and compact at 3.8 x 1.65 x 5.25 inches, it fits tight engine bay spaces without adding bulk. Installation is straightforward—apply appropriate thread sealant to male threads, torque to manufacturer specifications, and verify leak-free operation under pressure. Compatible with all fuel, oil, and coolant applications where AN fittings are standard, this adapter is indispensable for anyone moving beyond off-the-shelf solutions toward truly custom performance systems.