#6 x 18mm x 1.5 Adapter Fitting Black

The FRAGOLA #6 x 18mm x 1.5 Adapter Fitting in Black is a precision hydraulic and fuel system adapter designed to connect lines with different port configurations. This straight adapter fitting bridges a #6 AN (American National) male inlet to an 18mm x 1.5 male port, making it an essential component in custom fuel systems, brake lines, and pressurized fluid circuits where port compatibility varies across components.

Constructed from aluminum and finished in black anodized coating, this adapter provides corrosion resistance while maintaining a lightweight profile. The anodized finish protects the aluminum substrate against oxidation and wear in both dry and humid environments, a critical consideration in automotive, marine, and industrial applications where fluid lines are exposed to moisture and temperature cycling. The straight configuration eliminates flow restrictions and simplifies installation compared to elbow or tee adapters, ensuring reliable pressure transmission across the connection point.

This adapter is suited for builders and technicians assembling custom fuel systems, hydraulic brake circuits, coolant loops, and pressurized fluid networks where standard SAE and metric port sizes must interface. Whether upgrading a high-performance fuel delivery system, fabricating a custom cooling circuit, or matching incompatible line configurations in industrial equipment, this #6 AN to 18mm x 1.5 adapter provides a direct, leak-free solution. FRAGOLA fittings are recognized for precision engineering and consistent thread specifications, making them a trusted choice for applications demanding repeatable, reliable connections.

Each adapter is sold individually (SKU FRG460618-BL), weighing just 0.05 lbs. For anyone sourcing adapter fittings for high-pressure fluid systems, having the correct port-to-port configuration on hand ensures installation proceeds without delays or costly workarounds.