Flare Tee Adapter Fittin g; Size: -4 AN

The VIBRANT PERFORMANCE Flare Tee Adapter Fitting in -4 AN size is a precision fuel and fluid line connector designed for custom automotive fuel systems, turbo boost lines, and high-pressure hydraulic applications. This fitting serves as a critical junction point in modified engine builds where multiple fuel or coolant lines must converge into a single distribution point. Whether you're building a custom fuel injection system, upgrading to a larger turbocharger, or installing an aftermarket fuel pressure regulator, the flare tee adapter provides a reliable intersection for system integration while maintaining clean, professional plumbing architecture.

Constructed with Vibrant Performance's reputation for quality aluminum and steel components, the -4 AN flare tee adapter features JIC (Joint Industry Conference) 37-degree flare connections that ensure leak-free seals under pressure. The flare design creates a metal-to-metal contact surface that performs reliably in both fuel and boost applications, resisting vibration-induced loosening common in modified engine compartments. The compact 3-inch length and minimal profile allow installation in tight engine bay spaces without compromising accessibility, while the -4 AN specification handles flow rates from high-volume fuel pumps and complex turbo intercooler circuits. This is a true universal adapter—not a cheap swaged fitting—that delivers consistent performance across thousands of custom installations.

Street car builders, drag racers, and turbocharged platform enthusiasts rely on Vibrant Performance tee adapters to split fuel lines toward dual injectors, route boost lines to multiple intercoolers, or consolidate coolant overflow circuits on LS and modern engine swaps. The -4 AN size is ideal for secondary fuel lines, boost control applications, and lower-flow auxiliary systems where -6 AN might be oversized. Installation requires standard AN line fittings (sold separately) and basic wrenching with a wrench or socket; no special tools needed. Compatibility spans all fuel system standards—carburetor return lines, EFI fuel rails, vacuum-operated regulators, and pneumatic control systems—making this a versatile addition to any serious modification project.