Flare Reducer -10 Female To -6 Male

The Flare Reducer -10 Female To -6 Male is a critical adapter fitting designed for builders and enthusiasts who need to step down AN line sizes in high-performance fuel, oil, and coolant systems. This straight aluminum adapter bridges the gap between larger -10 AN female ports and smaller -6 AN male lines, making it indispensable when consolidating multiple smaller circuits into a single larger feed line or vice versa. Whether you're custom-routing fuel rails on a turbocharged engine, integrating an aftermarket fuel system into existing hard lines, or adapting legacy plumbing to modern performance components, this reducer handles the transition smoothly and reliably.

Constructed from lightweight aluminum and finished in blue anodized coating, the Flare Reducer delivers corrosion resistance and a clean aesthetic while maintaining structural integrity under pressure cycling. The straight-flow design minimizes turbulence and pressure drop compared to 90-degree alternatives, preserving system efficiency in fuel delivery or closed-loop cooling applications. EARLS engineering ensures precision flare seats on both the -10 female and -6 male ends, creating reliable leak-free connections when properly torqued—critical when working with volatile fuel systems or high-temperature engine bays where seepage is unacceptable. The compact 1.25 x 1.2 x 2.95-inch footprint and 0.06-pound weight make it easy to integrate into tight engine compartments without adding measurable mass.

Professional engine builders, LS swap enthusiasts, and fuel system upgrade specialists rely on this adapter when plumbing custom fuel systems, intercooler circuits, or remote oil filter kits where line size transitions are unavoidable. It pairs seamlessly with other EARLS fittings and adapters, ensuring consistent 37-degree JIC flare compatibility throughout your system. Installation requires only basic hand tools and attention to proper torque values—over-tightening the aluminum body risks thread stripping, while under-tightening invites leaks. Always verify that both your upstream -10 AN line and downstream -6 AN component are rated for your system's operating pressure before finalizing connections.