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-performance fuel, coolant, and brake line applications where reliability and precision matter. Whether you're upgrading a street-driven build, turbocharged engine swap, or competition vehicle, this stainless steel braided hose assembly eliminates the weak points in factory rubber lines. Mechanics and enthusiasts rely on braided hose systems to handle elevated pressures, temperature fluctuations, and vibration that quickly degrade OEM lines—making this 3-foot segment an essential component for custom fuel rails, intercooler circuits, and modular engine bay layouts.

The 303 Series construction combines a reinforced stainless steel braid outer layer with an inner PTFE (polytetrafluoroethylene) core that resists degradation from fuel additives, coolant chemistry, and brake fluid solvents far better than traditional rubber or nylon lines. The 6AN designation indicates a nominal 3/8-inch inside diameter, engineered to flow high volumes while maintaining structural integrity under surge pressure. This particular 3-foot length accommodates typical carbureted or EFI fuel system routing, intercooler piping, or brake line extensions without excessive joints that create leak points and restrict flow. The lightweight construction—weighing just 0.305 pounds—minimizes parasitic weight while the compact package (6.4 x 2.15 x 6.6 inches when coiled) simplifies storage and installation in tight engine compartments.

Professional builders and shade-tree mechanics alike choose stainless PTFE hose for fuel injection conversions, nitrous systems, and high-boost applications where pressure spikes and heat cycles demand non-negotiable reliability. The 6AN 303 Series works seamlessly with standard AN fittings (JIC-style adapters), making integration straightforward across carburetor fuel bowls, manifold fuel rails, turbo intercoolers, and modular engine bay designs. Installation requires only compatible AN hose ends and a proper hose crimper—no special tools or modifications to existing hard lines. For street or strip builds prioritizing durability over factory-spec compromises, this 3-foot segment pairs perfectly with matching lengths to complete custom fuel systems, coolant circuits, or brake line runs from master cylinder to distribution block.