12an ORB to 16an Fitting

The 12 AN ORB to 16 AN fitting from Waterman Racing Components is a precision hydraulic adapter designed for high-performance fuel, coolant, and brake line applications. This straight adapter bridges two common AN (Army-Navy) port sizes, enabling seamless integration between 12 AN male O-ring boss (ORB) ports and 16 AN male connections. Built for serious racers, fabricators, and performance enthusiasts, this adapter eliminates the need for custom hose assemblies and reduces system complexity in demanding motorsport and engine bay environments.

Constructed from lightweight aluminum with black anodized finish, the 12 AN ORB to 16 AN fitting delivers corrosion resistance and durability in harsh conditions. The O-ring boss design on the 12 AN side creates a metal-to-metal seal with the O-ring housed in the component, while the 16 AN male end accepts standard AN threads or quick-disconnect couplers. The anodized coating not only protects against oxidation but also provides a professional aesthetic while maintaining the adapter's structural integrity under high-pressure fluid flow. This straight configuration ensures minimal flow restriction and eliminates bends that could weaken connections or create turbulence in critical fuel and cooling systems.

Ideal for custom engine builds, fuel system upgrades, and race car plumbing, this adapter is essential when transitioning between component manufacturers or standardizing port sizes across a system. Installation requires hand-torquing with appropriate AN wrenches; Teflon tape is not required due to the O-ring sealing mechanism. The compact 3 x 2 x 5.5-inch profile and 0.1-pound weight make it suitable for weight-conscious builds without sacrificing structural strength. Whether you're building a competition engine, restoring a classic with modern fuel injection, or fabricating custom cooling systems, the Waterman Racing Components 12 AN ORB to 16 AN fitting ensures reliable, leak-free performance.