SKU: VIB16822
UPC: 690092152116
MPN: 16822
The VIBRANT PERFORMANCE -4AN Flare to AN Straight Cut Thread 9/16-18 adapter is an essential fitting for any serious fuel system, coolant line, or hydraulic application where quick, leak-free connections matter. This fitting bridges the gap between legacy flared hose ends and modern straight-thread AN ports, making it indispensable for upgrading fuel delivery systems or retrofitting cooling circuits on high-performance builds.
Engineered with a precision flare seat, this fitting mates securely to -4AN flare couplings, while the 9/16-18 straight-cut thread integrates directly into AN ports without the need for adapting sleeves or additional hardware. The straight-cut thread design provides a larger sealing surface and superior vibration resistance compared to standard JIC fittings, reducing the risk of weeping under pressure cycling and thermal expansion.
Mechanics and tuners rely on this adapter for its ability to maintain full flow integrity, which is critical when fuel pressure, boost control, or coolant circulation must remain consistent across wide rpm and load ranges. Compact and lightweight, this fitting occupies minimal engine bay space, making it a practical choice for performance enthusiasts.
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