-12 Male Port to -10an Male Fitting (2pk)

The -12 Male Port to -10AN Male Fitting (2pk) from CANTON is an essential adapter for high-performance fuel system conversions and custom plumbing applications. Whether you're upgrading to a modern fuel injection setup, installing an aftermarket fuel rail, or integrating specialty cooling or oil circulation lines, this fitting bridges port size mismatches that commonly occur when combining components from different manufacturers or generations. As a mechanic rebuilding classic muscle cars or tuning modern engines, you'll find this two-pack invaluable for keeping a spare on hand during complex system modifications.

This adapter reduces from a -12 AN (9/16-inch) male port down to -10 AN (5/8-inch) male thread, allowing seamless connection between incompatible line sizes without compromising flow or system integrity. CANTON fittings are precision-engineered aluminum with anodized finish for corrosion resistance and thermal stability—critical in engine bays where fuel lines run hot and vibration demands durability. The male-to-male design eliminates the need for bulky hose adapters, saving weight and reducing pressure drop across your fuel system, a genuine advantage in carbureted restorations and fuel-injected performance builds where marginally leaner jetting or smoother idle matters.

Experienced restorers and tuners value this fitting for retrofit engine swaps—particularly LS and small-block builds where factory fuel system ports rarely align with aftermarket fuel rails or surge tanks. The two-pack format means one stays in your toolkit for future projects while the other handles your immediate modification. Installation requires only a wrench or line wrench to prevent stripped fittings; ensure AN-rated hose barbs or threaded ports are clean and dry before assembly to guarantee leak-free operation under fuel pressure.