Expander AN -10 Female to -12 Male

The Expander AN -10 Female to -12 Male adapter from ALLSTAR PERFORMANCE is a critical fitting solution for custom fuel, oil, and brake line systems in high-performance automotive builds. This straight adapter enables seamless transitions between -10 AN and -12 AN hose configurations, making it essential for tuners and mechanics who need to consolidate line sizes or integrate components designed for different AN standards. Whether you're upgrading a fuel delivery system, reconfiguring brake lines for motorsports applications, or adapting aftermarket components to your existing plumbing, this fitting bridges the gap between incompatible port sizes.

Constructed from aerospace-grade aluminum with a black anodized finish, the Expander AN -10 Female to -12 Male adapter resists corrosion and maintains structural integrity under high-pressure fluid dynamics common in turbocharged, supercharged, and naturally aspirated performance engines. The female swivel end (AN-10) accommodates standard -10 hose fittings with full 360-degree articulation, reducing installation strain and simplifying routing through tight engine bays. The male expander end (AN-12) accepts -12 sized ports, allowing you to upsize to larger diameter hoses for improved flow capacity—a practical upgrade when increasing fuel pump output or enhancing brake cooling on track-focused vehicles.

This adapter is indispensable for street machines, circle-track racers, drag racing platforms, and DIY engine builders standardizing their AN plumbing after piecing together components from multiple manufacturers. Installation requires no special tools—simply hand-thread or use two wrenches in an opposing motion to achieve a leak-free seal. Weighing just 0.11 lbs and measuring 2.45 x 1.45 x 4.05 inches, it fits discreetly within engine bay constraints while delivering reliability in fuel injection, nitrous oxide delivery, remote oil filter mounting, and hydraulic brake systems where pressure ratings demand precision-engineered transitions.