10A Male to 10AN O-ring Port Adapter Clear

The 10A Male to 10AN O-ring Port Adapter Clear from REDHORSE PERFORMANCE is a precision hydraulic fitting engineered for modern fuel system conversions, custom cooling loops, and power steering upgrades on high-performance vehicles. As a seasoned mechanic, you'll recognize this adapter as essential when retrofitting AN (Army-Navy) spec plumbing into older or modified engine bays where original hard-line fittings don't accommodate contemporary fuel injection systems, turbo intercoolers, or auxiliary cooling circuits. This clear polycarbonate body allows visual inspection of fluid flow and pressurization, making it invaluable for diagnostics during system commissioning.

Built with a male 10A (metric M14×1.5) thread on one end and a 10AN O-ring port on the other, this adapter bridges legacy metric port specifications to standard AN hose barb systems without compromising seal integrity or flow dynamics. The O-ring face seal design eliminates the need for thread sealant tape, reducing contamination risk and ensuring repeatable, leak-free connections across thermal cycles and pressure spikes typical in forced-induction or race-fuel applications. The transparent construction is engineered from durable polycarbonate that resists fuel, coolant, and synthetic oil exposure while maintaining pressure ratings compatible with street and mild competition use.

This adapter is ideal for fabricators upgrading carbureted or port-injected engines to modern EFI, restomod builders integrating contemporary cooling or fuel delivery, and tuners converting factory intake manifold ports to custom aftermarket plumbing. The lightweight design (0.083 lbs) minimizes parasitic weight in engine bay layouts where every ounce counts. Whether you're transitioning a classic block to turbocharged power or standardizing a custom fuel distribution block on a swap platform, the 10A-to-10AN adapter ensures compatibility while maintaining OEM-level reliability and visual serviceability for system inspection.