#12 To #12 An Port Adapt

The #12 to #12 AN port adapt from EARLS is a precision straight-thread fitting designed to connect two 12 AN male O-ring ports in high-performance fluid systems. This adapter serves as a critical junction in hydraulic and fuel line assemblies, commonly found in racing engines, performance fuel systems, and custom automotive builds where reliable port-to-port connections are essential. The straight configuration eliminates flow disruption and maintains consistent pressure delivery across dual-port manifolds and block configurations.

Constructed from aerospace-grade aluminum and finished in blue anodized coating, this adapter combines lightweight durability with corrosion resistance—a critical combination in engine bays exposed to heat cycles and fuel exposure. The 12 AN male threads on both ends feature O-ring sealing surfaces that provide leak-free connections without requiring additional sealant tape, meeting SAE J518 standards for port compatibility. The compact 1.7 x 1.4 x 4.1 inch footprint and minimal 0.1 lb weight allow installation in tight manifold spaces without adding unnecessary mass to performance systems.

This adapter is essential for builders working with dual-feed fuel injection systems, custom fuel rails, high-flow water blocks, and modular hydraulic manifolds. It is compatible with any system using standard 12 AN male ports and O-ring face seals, making it universally applicable across domestic and import performance platforms. Installation requires only hand-tight plus a quarter-turn to seat the O-ring; overtightening is unnecessary and can degrade the seal.