16' 4an Blue Line

The 16' 4AN Blue Line nitrous hose is purpose-built for serious performance enthusiasts running dedicated nitrous oxide systems in street, strip, and competition applications. This 16-foot braided stainless steel hose delivers pressurized N2O from your bottle to the distribution block or manifold with reliability that matches OEM-level quality. Mechanics and tuners trust this hose because it eliminates weak points in nitrous delivery lines—places where system leaks, hose failures, or poor fittings compromise a build's integrity and safety.

Constructed from braided stainless steel with a PTFE (polytetrafluoroethylene) inner core, the 16' 4AN Blue Line resists corrosion, handles cryogenic nitrous temperatures, and maintains structural integrity under repeated high-pressure cycles. The 4 AN (AN4) fittings—both 4 AN straight male and 4 AN straight female ends—provide secure, leak-proof connections that meet SAE J518 standards. The blue fittings offer visual identification in engine bays, helping you quickly locate and service your system. Braided construction adds abrasion resistance and flexibility, reducing fatigue cracks that plague rubber-only hoses in high-vibration engine compartments.

This hose suits carbureted and fuel-injected engines using wet or dry nitrous kits, from small-block Chevy builds to modern LS and Coyote platforms. The 16-foot length accommodates mid-engine layouts and builds requiring extended bottle-to-manifold runs. Installation is straightforward: secure the hose away from exhaust components, hot surfaces, and sharp edges using adhesive-backed clips or cable ties. Check all connections for leaks before first system pressurization, and inspect the hose annually for cracks or bulging—especially if running boost or high-frequency nitrous hits. For professional nitrous system builds or upgrades, this hose delivers the reliability and durability that separates hobby builds from serious power adders.