12AN Male to 16AN O-ring Port Adapter Black

The 12AN Male to 16AN O-ring Port Adapter Black from REDHORSE PERFORMANCE is a precision hydraulic and fuel line fitting designed for high-flow applications requiring seamless size transitions. This straight adapter connects 12 AN male ports to 16 AN O-ring ports, making it essential for custom fuel systems, hydraulic installations, and performance engine builds where flexible line routing and component compatibility demand reliable adapter solutions. Built to OEM standards, this fitting eliminates the need for bulky reducers or multiple connection points.

Manufactured from aluminum and finished in black anodized coating, the 12AN Male to 16AN O-ring Port Adapter delivers corrosion resistance and lightweight performance critical to motorsports and aftermarket applications. The O-ring port design on the 16AN end creates a sealed interface that reduces pressure loss and prevents leakage in high-demand fuel delivery and cooling systems. REDHORSE's 920 Series straight adapter geometry minimizes turbulence, supporting sustained flow rates across demanding operating conditions without compromising system integrity.

Professional installers and enthusiasts building custom fuel rails, transmission coolers, and hydraulic systems rely on this adapter to bridge incompatible port sizes with confidence. Its compact 2.835 x 1.405 x 4.423 inch envelope fits tight engine compartments while the male-to-O-ring configuration ensures compatibility with modern fuel injection and cooling components. Installation requires standard hydraulic line crimping tools and AN fittings; proper torque specification prevents overtightening while maintaining a secure, leak-free connection in both street and racing applications.