6AN 303 Series SS PTFE Hose 3ft SS

The 6AN 303 Series SS PTFE Hose 3ft SS from REDHORSE PERFORMANCE is purpose-built for high-pressure fuel, coolant, and hydraulic systems in performance and modified vehicles. Whether you're upgrading a fuel system on a turbocharged engine, installing a custom cooling loop, or building a competition-grade hydraulic brake setup, this stainless steel braided hose delivers the reliability and durability that serious enthusiasts demand. The 3-foot length makes it ideal for mid-engine swaps, custom fuel rails, or point-to-point plumbing in tight engine bays where precision fitment matters.

The 6AN designation indicates a nominal inside diameter compatible with -6 AN fittings, making this a common choice for fuel delivery in modified LS engines, domestic muscle cars, and aftermarket fuel injection conversions. The 303 Series features a stainless steel outer braid that resists corrosion, UV degradation, and abrasion from engine heat, vibration, and contact with sharp chassis edges. The PTFE (polytetrafluoroethylene) inner core provides superior chemical compatibility with modern ethanol-blended fuels and synthetic coolants while maintaining consistent flow rates under sustained high pressure and temperature cycling—critical for turbocharged and supercharged applications where system stress is constant.

Installers and fabricators benefit from the hose's flexibility and workability; the 3-foot section can be routed through tight spaces without kinking or collapsing under vacuum or pressure. This product pairs seamlessly with stainless AN fittings (JIC, flare, or hose end adapters) for custom fuel systems, coolant manifolds, or turbo intercooler setups. Its lightweight construction (0.305 lbs) minimizes system weight on racing builds while the compact coiled dimensions allow easy storage and transport, making it a staple for DIY engine builders, professional fabricators, and tuners who prioritize reliability over budget shortcuts.