8AN Male to 12AN O-ring Port Adapter Black

The 8AN Male to 12AN O-ring Port Adapter in Black from Redhorse Performance is an essential hydraulic hose fitting for fuel system upgrades, coolant lines, and high-pressure fluid transfer applications in modified vehicles. Built for technicians and engine builders who demand reliable connections in complex fuel delivery and cooling systems, this adapter bridges two critical AN port sizes with precision-engineered tolerances. Whether you're upgrading from a factory fuel rail to a larger-displacement engine or integrating aftermarket fuel injection components, this adapter ensures leak-free performance under demanding conditions.

The o-ring sealed design eliminates the need for PTFE tape or thread sealant, providing a dry-break connection that meets SAE standards for fuel and coolant systems. Redhorse Performance's black anodized aluminum construction resists corrosion and maintains structural integrity even under extreme underhood temperatures and vibration. The 8AN male inlet threads smoothly onto smaller fuel line adapters or pump outlets, while the 12AN o-ring port accommodates larger diameter hoses and rail connections, allowing seamless integration between components of different port sizes without compromising flow rate or system pressure ratings.

This adapter is ideal for turbocharged, supercharged, and naturally aspirated builds where fuel supply lines must transition between fuel pump assemblies and high-flow fuel rails or carbureted fuel blocks. Mechanics installing fuel surge tanks, dual fuel pump setups, or custom fuel management systems will appreciate the compact 2.8 x 1.4 x 3.8 inch profile, which fits tight engine bays without sacrificing accessibility. Verify 8AN male and 12AN o-ring port compatibility with your fuel system components before installation; the lightweight 0.125 lb design integrates seamlessly into custom plumbing without adding structural load to the vehicle's fuel line mounting points.