#6 Econo-O-Fit Red 9/16

The #6 Econo-O-Fit Red 9/16 from EARLS is a compact worm-gear hose clamp designed for 6 AN (which is 3/8-inch) hydraulic and fuel line applications. This economy-grade clamp serves mechanics, fabricators, and motorsports enthusiasts who need reliable line securing on custom fuel systems, hydraulic brake lines, and cooling circuits. The Econo-O-Fit series balances affordability with proven holding power, making it an essential consumable for anyone assembling or maintaining performance or classic vehicle plumbing.

Constructed from red anodized aluminum, the #6 Econo-O-Fit features a worm-gear drive mechanism with a hex head for easy tightening. The aluminum body resists corrosion in engine bays and fuel tank environments while remaining lightweight—critical in weight-conscious applications. The 9/16-inch hex head accepts standard socket and wrench tools, enabling quick installation and adjustment without special equipment. The worm-gear design provides smooth, progressive clamping force that seats hose barbs securely without over-torquing or damaging fuel and coolant lines.

This clamp excels in tight-space engine compartments, aftermarket fuel injection retrofits, and radiator recirculation lines where precision and compact footprint matter. It is compatible with all standard 6 AN hose barbs (3/8-inch inner diameter) and pairs seamlessly with braided stainless hose and silicone fuel lines. The lightweight aluminum construction makes it ideal for weight-critical race cars and restorations. Sold individually, the #6 Econo-O-Fit Red 9/16 is a cost-effective workhorse for DIY builders and professional shops alike.