Out of stock
SKU: FRG491951-BL
UPC: 822320020793
MPN: 491951-BL
The FRAGOLA Male Adapter Fitting #6 x 9/16-24 Black Anodized (part number 491951-BL) is a precision straight adapter designed to connect 6 AN male ports to 9/16-24 male threads. This aluminum fitting serves as a critical bridge component in high-pressure fuel systems, hydraulic lines, and custom fluid transfer applications where reliable port conversion is essential. The black anodized aluminum construction provides corrosion resistance and identifies the fitting within color-coded system setups common in performance automotive and motorsports environments.
The 6 AN (AN6) specification represents a standard ORB (O-ring boss) male port, while the 9/16-24 UNF (Unified National Fine) threading accommodates common OEM and aftermarket component ports. Straight adapter fittings eliminate flow direction changes and simplify installation geometry in compact engine bay layouts. The black anodized finish offers superior corrosion protection compared to bare aluminum, particularly valuable in marine, high-vibration, or salt-air environments. At 0.03 lbs and compact dimensions (1.6 x 0.85 x 4.15 inches), this adapter integrates into tight manifold configurations without adding significant weight or bulk.
This fitting is specified for fuel system upgrades, nitrous oxide line integration, coolant rerouting, and hydraulic power steering modifications in performance and racing applications. Engine builders, fuel system integrators, and custom fabricators rely on FRAGOLA adapters to ensure consistent pressure ratings and thread compatibility across mixed component manufacturers. Each adapter is sold individually, allowing system builders to source exact port conversion requirements without over-purchasing bulk kits.
FRAGOLA fittings are established in the racing and hot rod community for dimensional accuracy and pressure-rated aluminum construction. The 491951-BL adapter integrates into systems using AN6 male feed lines and components with 9/16-24 UNF ports, including many OEM Holley carburetor fuel supply ports and aftermarket fuel rails. Verify thread pitch and port size compatibility with your specific fuel system manifold or component before ordering.
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