AN Reducer #12 Female x #10 Male

The AN Reducer #12 Female x #10 Male from Triple X Race Components is a straight-port hose adapter engineered for high-performance fuel systems, hydraulic lines, and pressurized fluid circuits in modified vehicles and race cars. This reducer fitting bridges two different AN (Army-Navy) port sizes, allowing mechanics and fabricators to connect larger-diameter hoses to smaller inlet or outlet ports without compromising flow or system integrity. Whether you're building a custom fuel cell plumbing harness, upgrading a turbo coolant circuit, or adapting legacy components to modern fuel injection systems, this adapter solves common sizing mismatches in performance automotive builds.

Machined from lightweight aluminum and finished in black anodized coating, the AN Reducer #12 Female x #10 Male features a female swivel port on the 12 AN side and a fixed male port on the 10 AN side, allowing for vibration-resistant hose connection while preventing cross-threading at the adapter junction. The straight design minimizes turbulence and pressure drop, critical for maintaining fuel delivery precision in carbureted and EFI fuel systems alike. Anodized aluminum construction resists corrosion from ethanol blends and coolant exposure while keeping overall weight minimal—at just 0.12 lbs, it adds negligible mass to fuel rails or transmission cooler circuits. The swivel design accommodates hose routing angles without stressing the fitting itself, extending hose life and reducing leak points in complex engine bay layouts.

Fabricators, drag racers, and street machine enthusiasts rely on Triple X Race Components adapters for custom fuel systems, transmission cooler lines, and nitrous supply circuits where exact AN sizing is unavailable. This reducer is compatible with any standard -12 AN hose assembly (3/4" ID nominal) on the inlet and -10 AN hose (5/8" ID nominal) on the outlet, making it ideal for stepped plumbing transitions where space or budget constraints prevent running matched-size systems throughout. Installation requires basic hose wrench skills and Teflon tape on male threads; the compact 1.9 x 1.4 x 4.05 inch footprint fits tight engine bays and confined frame rail routes. Pair with quality braided stainless hose and reusable crimp fittings for a leak-free, professional-grade fuel or coolant circuit.