Reducer Fitting 12an to 10an

The ALLSTAR PERFORMANCE Reducer Fitting 12AN to 10AN (ALL 90076) is a straight adapter designed to connect larger-diameter 12 AN female ports to smaller 10 AN male line connections. This aluminum reducer fitting features black anodized construction, delivering corrosion resistance and durability in demanding fluid-transfer applications. Built for high-performance fuel systems, coolant circuits, and custom plumbing configurations where port-size mismatches require a reliable intermediate solution.

The straight-flow design minimizes turbulence and pressure loss compared to angled fittings, making it ideal for applications where directional alignment permits a linear connection. Aluminum construction keeps weight low while the black anodized finish provides abrasion resistance and a professional appearance in engine bays and fuel-cell installations. The compact form factor—measuring 3.5 inches in length—allows installation in tight spaces common to modified and racing platforms. Each fitting is individually packaged and ready for immediate installation.

This reducer adapter serves builders and technicians working on custom fuel systems, EFI conversions, cooling circuits, and hydraulic applications where AN (Army-Navy) standard fittings dominate. Whether downsizing a fuel line from 12 AN to 10 AN, adapting legacy plumbing to modern components, or consolidating a multi-stage fuel supply system, this fitting provides the flexibility needed without requiring complete re-plumbing. ALLSTAR PERFORMANCE parts are engineered for consistency across street, strip, and competition builds, making this reducer a trusted choice for serious fabricators and engine builders.