Building a custom fuel, oil, or coolant line? This 3AN (AN-3) male straight bulkhead flare fitting from Speed Daddy is a key piece of hardware. It's a 3/8\ male thread fitting with a flare seat, designed to pass through a panel or bulkhead. The bright red anodized aluminum finish looks sharp and adds a layer of corrosion resistance. The part number is SDD-FT1900503RD. It's made from anodized aluminum alloy, so it's lightweight yet strong for performance applications. This is definitely a custom/performance part, not a standard OEM replacement. You'd use it to create a secure, leak-free connection where a line needs to go through a firewall, chassis panel, or other barrier. Just remember: these fittings require matching AN-style hose ends and proper assembly tools. A quick heads-up for California buyers – there's a Prop 65 warning about chemicals, which is pretty standard for metal products. Perfect for hot rods, race cars, motorcycles, or any custom automotive project where you want clean, reliable plumbing. Make sure you have the right mating parts and tools before you start!