AN to Metric Fitting -10AN to M14 x 1.5

The AN to Metric Fitting -10AN to M14 x 1.5 from Vibrant Performance bridges two critical industrial fluid standards in modern automotive plumbing systems. Whether you're upgrading a turbo feed line, rerouting coolant in a custom water cooling setup, or integrating aftermarket fuel system components, this adapter solves the compatibility challenge between JIC AN fittings and metric thread ports common to European and imported engines. Mechanics and performance enthusiasts rely on these transition fittings when OEM ports don't match aftermarket hose assemblies—a real-world necessity in engine bay modifications.

This fitting translates -10AN hose size (5/8-inch outer diameter) to an M14 x 1.5 metric port with precision engineering that ensures leak-free seals under high pressure and temperature cycling. The -10AN designation carries a standardized 37-degree JIC flare, while the M14 x 1.5 metric thread matches common receiver ports on turbocharged engines, intercoolers, and fuel rail assemblies found in late-model imports and domestics. Vibrant Performance's quality control maintains tight tolerances on both thread forms, reducing the risk of cross-threading or galling—critical when working with aluminum engine blocks or cast iron manifolds that don't tolerate rework well.

This adapter is essential for builders running custom turbo kits, fuel system upgrades, or cooling system modifications on platforms where stock plumbing uses metric ports but performance hose assemblies ship with AN-sized ends. Installation requires a 10AN flare wrench on the hose side and a metric socket on the M14 port; hand-tight plus one-eighth turn is the standard practice to avoid over-torque damage. The compact 3.54-inch length makes it suitable for tight engine bay routing where space is at a premium.