6AN Male to 11/16-18 Inverted flare male BLK

The 6AN Male to 11/16-18 Inverted Flare Male BLK adapter by REDHORSE PERFORMANCE is a precision hydraulic and pneumatic fitting designed to connect modern AN-port systems to legacy inverted flare hose ends and components. This straight adapter serves as a critical interface in performance fuel systems, brake lines, coolant circuits, and high-pressure applications where reliable, leak-free connections are non-negotiable. Built for technicians, fabricators, and performance enthusiasts who demand compatibility across generational equipment standards, this fitting bridges the gap between AN6 metric sizing and traditional 11/16-18 inverted flare specifications.

Manufactured from aluminum and finished in black anodized coating, the 6AN Male to 11/16-18 Inverted Flare Male adapter delivers superior corrosion resistance and a professional appearance while maintaining structural integrity under pressure cycles. The male AN6 end accommodates standard AN hose barbs, -06 hose, and port connections, while the inverted flare male end threads directly into legacy components rated for 11/16-18 connections. Anodized aluminum construction minimizes weight—just 0.083 lbs—without sacrificing durability, making this adapter ideal for engine bays, suspension systems, and confined spaces where mass matters. The straight geometry ensures minimal turbulence and pressure loss compared to angled variants.

This adapter excels in retrofit and modernization scenarios where OEM or aftermarket inverted flare systems must interface with contemporary AN-plumbed components. Common applications include fuel system upgrades on classic and muscle cars, brake line relocations in hot rods, custom coolant routing in engine conversions, and pneumatic suspension installations. Proper installation requires thread sealant (PTFE tape or pipe dope) on the inverted flare male end and secure hose clamps or crimp fittings on the AN side. Ensure torque specifications are followed to prevent stripping aluminum threads; typical range is 8–12 ft-lbs depending on system pressure and hose type.