-16an to -16an Fitting

The -16AN to -16AN fitting from Moroso is a straight adapter designed for high-flow hydraulic and fuel system applications where direct male-to-male connections are required. Built for serious performance enthusiasts and professional mechanics, this adapter serves as a critical junction point in custom fuel delivery systems, turbo setups, and pressurized cooling circuits. Whether you're fabricating a custom fuel rail, upgrading your engine's cooling capacity, or integrating aftermarket fuel injection components, this fitting ensures leak-free operation under demanding conditions.

Manufactured from aluminum and finished in black anodize, the -16AN to -16AN fitting combines lightweight construction with corrosion resistance—essential for engine bays exposed to heat cycling, fuel exposure, and moisture. The O-ring seal design provides redundant sealing geometry that prevents weeping at high pressure differentials, a common failure point in poorly sealed systems. The straight configuration eliminates flow turbulence compared to elbows, maintaining system efficiency and reducing heat generation in fuel lines. Moroso's precision engineering ensures consistent thread concentricity and O-ring groove tolerances, delivering reliability in applications running 40+ PSI fuel pressure or high-temperature coolant circuits.

This adapter is indispensable for builders working with 16AN hose assemblies and manifold blocks that require direct male connections on both ends. Commonly used in EFI fuel system conversions, forced induction setups, and custom plumbing layouts where standard fittings don't align with your fabrication goals. Installation is straightforward—hand-tighten initially, then use a wrench on the hex body to achieve final torque (typically 20–25 ft-lbs for AN fittings). The compact 5.45" x 1.55" x 7.25" profile fits tight engine compartments without requiring special clearance modifications. Verify your -16AN hose end orientation and O-ring condition before assembly to ensure leak-free performance.