6AN 401 Series Push Lock Hose 20ft Blue

The 6AN 401 Series Push Lock Hose 20ft Blue by REDHORSE PERFORMANCE is engineered for high-performance fuel, coolant, and fluid transfer systems in modified vehicles and racing applications. This 20-foot hose assembly is designed for builders and mechanics who demand reliable, leak-free connections under extreme pressure and temperature cycles. Whether you're fabricating a custom fuel system, upgrading coolant lines, or building a competition engine bay, this hose delivers the durability required for serious automotive work where standard rubber hoses fall short.

The 6AN size designation indicates a nominal outer diameter of 3/8 inches, making this hose ideal for mid-range flow applications in fuel injection systems, turbocharger feed lines, and cooling circuits. REDHORSE PERFORMANCE's 401 Series utilizes a push-lock quick-disconnect fitting design that allows tool-free assembly and disassembly—a critical feature when you're testing configurations or performing maintenance in tight engine compartments. The braided construction and blue cover provide superior abrasion resistance and heat dissipation compared to single-wall tubing, while the push-lock terminals eliminate the need for hose clamps, reducing assembly time and improving the professional appearance of your build. At 2.46 lbs for 20 feet, this hose balances structural integrity with weight efficiency, a priority for performance-oriented builds.

Professional mechanics and engine builders favor this hose for EFI fuel systems, water pump bypass circuits, and transmission cooler lines on turbocharged and supercharged platforms. The 20-foot length provides flexibility for complex routing around headers, intercoolers, and custom manifolds without requiring multiple spliced connections. Push-lock connections are compatible with standard 6AN male and female fittings, making integration straightforward into existing hose assemblies. Proper support brackets should be installed every 12–18 inches to prevent vibration-induced wear, especially on high-vibration engine swaps or track vehicles where fluid line failure is not an option.