12an Port Inlet/Outlet Adapter Fitting

The Aeromotive 12 AN port inlet/outlet adapter fitting (MPN 11734) is an essential fuel system component designed for professional-grade fuel pump installations and high-flow fuel line routing. Built for mechanics and performance enthusiasts upgrading factory fuel systems, this aluminum adapter bridges the gap between different fuel line configurations and Aeromotive spur gear pump assemblies. Whether you're installing an aftermarket fuel system, transitioning between line sizes, or consolidating inlet and outlet ports on a custom fuel cell setup, this fitting provides the critical interface needed for reliable fuel delivery.

Manufactured from precision aluminum with black anodized finish, this 12 AN adapter resists corrosion while maintaining structural integrity under fuel system pressure and vibration. The anodized coating protects against oxidation and chemical degradation from modern fuel blends, including ethanol-based gasoline and race fuels. At 0.21 lbs and compact dimensions (2.9 x 2 x 4.95 inches), it integrates cleanly into tight engine compartment layouts without compromising accessibility or serviceability. The standardized 12 AN porting ensures straightforward compatibility with industry-standard braided stainless steel fuel lines, AN fittings, and Aeromotive fuel pump systems.

This adapter is ideal for fuel system builders, street rod fabricators, and motorsport technicians who demand precision and durability in dual-port fuel routing. Common applications include dual-tank fuel systems, fuel cell installations with separate feed and return circuits, and pressure regulator bypass configurations. Installation requires basic fuel system knowledge and proper AN wrench sizing; always verify line compatibility before assembly and inspect the fitting for defects. Pair this adapter with quality fuel hose, appropriate hose clamps, and a fuel pressure gauge to ensure optimal system performance and safety.