Earl's Performance Annealed 304 Stainless Steel Hardline Tubing

Earl's Performance Annealed 304 Stainless Steel Hardline Tubing is the professional-grade plumbing solution trusted by race teams, performance builders, and automotive fabricators who demand precision, durability, and long-term reliability. Earl's Performance Plumbing brought aviation fluid transfer technology to the automotive performance market over five decades ago, and this hardline tubing line reflects that legacy of quality and engineering excellence.

Key Features:

• Premium 304 Stainless Steel Construction: Provides exceptional resistance to corrosion, oxidation, and harsh chemical environments — ideal for fuel, brake, oil, clutch, and coolant system applications
• Annealed for Superior Formability: The annealing process relieves internal stress in the metal, making the tubing easy to work with standard bending and flaring tools without kinking or work-hardening
• Single and Double Flare Compatible: Forms clean single or double flare ends for secure, leak-free connections — double flaring requires a high-quality forming tool
• Polishable Natural Finish: The stainless surface can be polished to a custom look, making it equally at home in show-quality builds and dedicated competition vehicles
• Smooth Interior Bore: A clean, consistent internal surface minimizes turbulence and promotes optimal fluid flow throughout the system
• Broad Fluid System Compatibility: Suited for brake lines, fuel delivery, oil routing, clutch lines, transmission cooler lines, and other hydraulic or fluid transfer systems
• Pairs with Earl's Hardline Ecosystem: Designed to work with Earl's full range of stainless tube nuts, AN adapters, and dedicated hardline tools — including tubing cutters, flaring tools, benders, and straighteners — for a complete, integrated plumbing solution
• Sold in Straight Lengths: Shipped straight to allow fabricators to cut and form tubing to exact specifications for any routing path or chassis configuration
• Made in USA: Mill and country-of-origin markings are present on the tubing and can be easily removed with brake cleaner if desired

Whether you're fabricating a custom brake system, routing fuel lines on a competition build, or plumbing a performance street machine, Earl's Annealed 304 Stainless Steel Hardline Tubing gives you the professional-grade material to get the job done right. Available in a range of diameters and lengths to suit virtually any hardline plumbing requirement.