4AN Non-Swivel Hose En ds Black 45

The 4AN Non-Swivel Hose Ends Black 45 from REDHORSE PERFORMANCE is a precision hydraulic fitting engineered for high-performance fuel, coolant, and fluid delivery systems in modified vehicles. Built for automotive enthusiasts who demand reliable, leak-free connections in custom engine bays, turbo setups, and fuel system upgrades, this fitting eliminates the need for additional adapters or swivel components. Whether you're assembling a fuel rail on a naturally aspirated build or routing custom coolant lines through a supercharged engine, non-swivel hose ends provide a fixed, secure connection point that won't rotate under vibration or system pressure.

The 45-degree angle design allows flexible routing around engine bay obstacles without kinking or restricting flow, a critical advantage when space is limited in tight motor installations. Constructed from high-grade aluminum alloy with a durable black anodized finish, this fitting resists corrosion from coolant additives and fuel solvents while maintaining a clean, professional appearance under the hood. The 4AN (1/4-inch) bore diameter is the industry standard for medium-duty fuel and coolant circuits, offering a balance between flow capacity and compact installation footprint. The non-swivel design eliminates micro-movements that can fatigue hose ends over thousands of engine cycles, resulting in longer service life and fewer leak points in your custom hydraulic system.

Professional engine builders and DIY tuners rely on REDHORSE PERFORMANCE fittings for fuel system conversions, intercooler plumbing, and motorsport cooling upgrades where reliability is non-negotiable. This hose end pairs seamlessly with braided stainless steel or nylon-wrapped hose assemblies rated for 3000+ PSI, making it ideal for forced-induction applications, carbureted hot rods, and modern EFI engine swaps. Installation requires no special tools beyond a standard wrench—simply thread onto prepared hose ends and tighten to a snug fit. Verify hose bore and pressure rating before assembly to ensure compatibility with your specific fuel pressure regulator, pump output, and system demand.