Collection: Auto - Tubing

Construct leak-free hydraulic circuits, safely route high-pressure fuel lines, and handle aggressive system heat loops with our premium selection of Auto Tubing. At DIY Customs, we provide high-durability copper-nickel (NiCopp) brake lines, seamless stainless steel tubing, flexible fuel lines, aluminum vacuum tubing, and specialized high-pressure transmission line tubing designed for a perfect fit on custom hot rods, rugged off-road vehicles, and everyday passenger cars. Whether you are bending a specialized custom brake line loop layout to accommodate an upgraded master cylinder setup, plumbing a high-flow EFI fuel system grid using durable corrosion-resistant metal tubing, or refreshing old, brittle vacuum lines with thick-walled flexible hoses to eliminate engine performance leaks, our professional-grade fluid-transfer components offer the burst strength and structural flexibility you need at unbeatable prices. From raw bulk tubing coils to direct-fit plumbing accessories, we carry the ultimate line-fabrication essentials. Don't see your specific outer diameter (OD) measurement (like 3/16", 1/4", or 5/16"), exact wall thickness parameter, or specialized material composition for your custom plumbing project? Hit the live chat or call 412-882-8346—we can special order and drop-ship exactly what your vehicle requires directly to your doorstep!