Male Flare Tee -4AN Adapter Fitting

The Male Flare Tee -4AN Adapter Fitting is a critical component in any high-performance fuel, oil, or coolant system where reliable pressure-rated connections are non-negotiable. This tee configuration allows you to branch a single -4AN line into two separate circuits, making it essential for fuel injection upgrades, turbocharger oil supply lines, or custom cooling loops on modified engines. Whether you're building a street machine or race platform, a quality tee fitting eliminates the need for external splitters and ensures leak-free operation under sustained boost and high-flow conditions.

Manufactured by Vibrant Performance, a trusted name in automotive fluid systems, this male flare tee features -4AN port sizing—a metric standard that flows approximately 50% more volume than -3AN at equivalent pressure ratings. The flare connection design uses a 37-degree JIC (Joint Industry Council) angle, which creates a metal-to-metal seal that outperforms compression fittings in high-vibration environments common in engine bays. The compact footprint and precision threading ensure compatibility with both OEM and aftermarket manifolds, regulators, and distribution blocks without requiring adapters or reducers that introduce pressure drop.

This fitting suits mechanics and enthusiasts upgrading fuel delivery on LS-swap builds, EFI conversions on carbureted platforms, or anyone plumbing high-flow cooling systems on turbocharged applications. Installation is straightforward—hand-tighten first, then use a wrench to snug the fitting while supporting the main body to prevent thread damage. Its lightweight construction (0.02 lbs) and compact profile (3.54 x 1.25 x 6.3 inches) make routing lines simple in tight engine compartments, and the proven Vibrant Performance quality ensures it will outlast your modifications. Keep a spare on hand when working with -4AN systems; this is the type of fitting that separates reliable custom builds from leak-prone amateur work.