AN to O-Ring -16 x 1 5/16-12 (-16)

The AN to O-Ring -16 x 1 5/16-12 (-16) adapter from TRIPLE X RACE COMPONENTS is an essential hydraulic and fuel system fitting for high-performance vehicle builds, racing platforms, and custom engine modifications. This adapter bridges AN-spec hose systems to O-ring boss (ORB) ports, a critical interface in fuel injection systems, turbo cooling lines, power steering upgrades, and transmission cooler installations.

Engineered for precision fit and durability, the AN-16 to 1 5/16-12 ORB adapter features a straight-thread design with an integrated O-ring groove machined to exacting tolerances. The -16 AN size accommodates high-flow applications typical of supercharged, turbocharged, or big-displacement builds, while the 1 5/16-12 UNF thread standard ensures compatibility with OEM and aftermarket component ports. This fitting is designed to create a metal-to-metal interface that resists vibration loosening and maintains integrity across repeated thermal cycles—critical for reliability on the track or street.

The compact footprint and black anodized finish resist corrosion and blend seamlessly into engine bay installations. Whether you're fabricating a standalone fuel system on a street rod, converting a carbureted engine to EFI, or plumbing a race-prepped motor, this adapter ensures leak-free, vibration-resistant connections under extreme pressure and temperature cycling.