8an Female to 10an Male Expander - Black

The 8AN Female to 10AN Male Expander in Black from REDHORSE PERFORMANCE is an essential hydraulic line adapter for custom fuel, coolant, and brake system configurations. This fitting expands from a smaller 8AN port to a larger 10AN connection, making it ideal for high-flow fuel delivery systems, turbo intercoolers, and performance cooling loops where you need to step up hose diameter mid-system. Whether you're building a race car fuel system, upgrading your engine bay plumbing, or integrating larger-capacity coolers, this expander allows seamless transitions between different AN line sizes without requiring complete line replacements.

REDHORSE PERFORMANCE expanders are engineered from lightweight aluminum with precision-machined threads and a smooth internal bore to minimize pressure loss and turbulence. The black anodized finish resists corrosion and oxidation in engine bays exposed to heat cycles, fuel vapors, and moisture. The 8AN female port accepts standard -8 AN hoses and fittings, while the 10AN male outlet threads directly into -10 AN female ports on manifolds, coolers, fuel rails, or distribution blocks. This design maintains structural integrity under boost and sustained high-flow conditions common in forced-induction and naturally-aspirated performance applications.

Mechanics and engine builders choose this expander when scaling up fuel system capacity for power adders, swapping in larger radiators or intercooler cores, or consolidating multiple smaller lines into a single larger return path. It's compatible with any automotive fluid—fuel, coolant, brake fluid, or power steering fluid—making it versatile across custom LS, big-block, and turbocharged builds. Installation requires no special tools; simply hand-tighten the fitting into its port and use a wrench on the hex body to snug it fully. Always use appropriate -8 AN and -10 AN hose assemblies rated for your system pressure and fluid type to ensure reliable performance and leak-free operation.