6AN PTFE Hose Ends Black 45

The 6AN PTFE Hose Ends Black 45 from Redhorse Performance are essential fittings for any serious fuel system upgrade, turbo plumbing, or hydraulic brake line installation. Built for mechanics and performance enthusiasts who demand reliability under high pressure and extreme temperatures, these 45-degree AN hose ends provide a secure, leak-free connection point in custom fuel injection systems, forced induction setups, and standalone engine management conversions. Whether you're building a street machine, drag racer, or daily driver with aftermarket fuel system components, proper hose end quality directly impacts safety and system longevity.

These AN fittings feature PTFE (polytetrafluoroethylene) construction, which resists fuel permeation, alcohol-based fuels, and synthetic fluids far better than standard rubber hoses alone. The 45-degree angle design minimizes hose bend radius requirements and reduces turbulence at connection points—critical for maintaining fuel pressure stability in high-flow applications. The black anodized aluminum finish provides corrosion resistance and durability in engine bays exposed to salt, moisture, and thermal cycling. AN6 (6AN) sizing accommodates standard 6AN hose, which flows approximately 50+ gallons per hour at safe pressure margins, making it ideal for EFI systems, fuel injection upgrades, and boost-referenced fuel regulators on turbocharged or supercharged engines.

Mechanics installing fuel rails, fuel filters, fuel pressure regulators, and turbocharger feed or return lines rely on these hose ends for precision fitment and repeatable sealing. The 45-degree configuration works with AN6 hose assemblies terminated with matching swaged or crimped ends, common in fuel system kits from companies like Aeromotive, Holley, and custom builders. Installation requires proper torque specs—typically 10–15 ft-lbs for AN fittings—and an AN wrench to prevent fitting rotation. These ends suit gasoline, E85, methanol, and diesel fuel systems, making them versatile for street, race, and marine applications where high-pressure hose routing demands precision and zero tolerance for leaks.