120 Degree High Flow Hose End Fitting -4AN

The 120 Degree High Flow Hose End Fitting -4AN by Vibrant Performance is a precision-engineered fuel and coolant line connector built for serious engine builders and performance enthusiasts. This fitting addresses a critical need in custom fuel system design: delivering maximum flow while maintaining tight, leak-free seals under high-pressure conditions. Whether you're building a boosted engine, converting to a fuel injection system, or upgrading your cooling loop, this AN-style fitting provides the reliability and flow characteristics that separate professional-grade installations from amateur builds.

Vibrant's high-flow design utilizes a 120-degree angle configuration that optimizes hose routing in tight engine bays while maintaining unrestricted flow paths that minimize pressure drop and heat generation. The -4AN port designation accommodates standard -4 AN hose (1/4-inch ID equivalent), ensuring compatibility with OEM and aftermarket fuel systems, transmission coolers, and intercooler circuits. The fitting's aluminum construction is precision-machined to exacting tolerances, with smooth internal transitions that eliminate turbulence and prevent heat-trapping dead zones. Vibrant Performance's reputation in the automotive aftermarket is built on attention to these engineering details—every angle, radius, and finish is optimized for both function and durability against fuel degradation and thermal cycling.

This fitting is essential for engine builders working with carbureted restorations, fuel-injected conversions, and modern performance platforms where factory routing won't suffice. The 120-degree angle makes it ideal for navigating around cylinder heads, intake manifolds, and firewall-mounted components without kinking hose or creating sharp bends that reduce flow and increase failure risk. Installation requires standard -4 AN hose with proper JIC fittings on either end; ensure hose is rated for your fuel type and system pressure before assembly. TacticalSurplusUSA carries this Vibrant fitting as part of a comprehensive range of performance plumbing components, allowing you to source a complete fuel or cooling system from a single trusted vendor.