SKU: VIB16822
UPC: 690092152116
MPN: 16822
The VIBRANT PERFORMANCE -4AN Flare to AN Straight Cut Thread 9/16-18 (SKU: VIB16822) is a precision hydraulic and pneumatic adapter fitting designed to bridge AN flare-style connections to AN straight-thread ports. This aluminum adapter converts a -4 AN male flare connection to a 9/16-18 male straight-thread fitting, enabling seamless integration between legacy flare-based systems and modern straight-thread manifold blocks, control modules, and instrumentation ports. Black anodized finish provides corrosion resistance in demanding environments.
The straight-thread design (9/16-18) eliminates the need for ferrule-based sealing, instead relying on machined thread engagement and PTFE tape or thread sealant for a leak-free connection. This approach reduces assembly time and potential cross-threading compared to flare adapters. The -4 AN designation corresponds to 1/4-inch hose ID, making this fitting suitable for moderate-pressure systems in fuel, coolant, and pneumatic applications. Aluminum construction keeps weight minimal—critical in motorsports, aerospace, and mobile equipment applications—while anodization provides protection against oxidation and minor abrasion damage.
This adapter serves technicians and fabricators working with high-performance automotive fuel systems, turbo installations, custom cooling circuits, and pressure-test equipment where AN components from different generations or suppliers must mate cleanly. It is also common in aerospace mockups, prototype hydraulic systems, and laboratory pressure test rigs where straight-thread ports are standard on measurement instruments. VIBRANT PERFORMANCE is recognized for dimensional accuracy and consistent thread pitch, ensuring compatibility across multiple system integrations.
The -4AN to 9/16-18 adapter fills a specific niche in AN-based component ecosystems, particularly where modular system design requires transition between legacy flare connections and modern straight-thread instrumentation. Single-piece aluminum construction eliminates multiple-component assemblies, reducing potential leak points and simplifying field replacement.
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