6AN 4ft Nitrous Line Black

The 6AN 4ft Nitrous Line Black from REDHORSE PERFORMANCE is a dedicated fuel delivery line engineered for nitrous oxide systems in high-performance vehicles. Built for serious enthusiasts and professional tuners, this line serves as a critical component in any NOS installation, carrying pressurized nitrous from the bottle to the solenoid valve and distribution block. Whether you're building a street-legal supercharger alternative or prepping a dedicated drag racing platform, a quality nitrous line prevents leaks, maintains system integrity, and ensures consistent boost delivery when you hit the button.

This 6AN hose features a robust black finish that resists UV degradation and blends seamlessly into engine bay aesthetics while meeting SAE J343 standards for automotive hose assemblies. The 4-foot length provides ample routing flexibility without excess slack, allowing clean installation from bottle mounting location to under-hood components. The 6AN sizing—equivalent to 3/8-inch nominal diameter—balances flow capacity with compact packaging, delivering the volume nitrous systems demand while fitting tight modern engine compartments. REDHORSE PERFORMANCE constructs this line with reinforced synthetic rubber and precision crimped fittings to handle the extreme pressure cycles that characterize NOS operation, preventing catastrophic leaks under load.

This line suits bolt-on kits and custom builds alike, from single-stage direct-port systems to complex progressive controllers with secondary solenoids. When replacing aged or marginal hose, OEM upgrades, or assembling a comprehensive NOS platform, measure your routing path and confirm your solenoid inlet sizing before ordering—6AN accommodates most universal systems, but verify compatibility with your specific valve manifold. Installation requires basic wrench work and attention to SAE flange torque specs; apply thread sealant to NPT fittings and secure the line with P-clamps every 12–18 inches to prevent chafing and vibration damage during boost events.