3/16" × 40" Copper-Nickel Brake Line – Pre-Flared, Ready to Install

Put rusted steel tubing in the rear-view mirror with a copper nickel brake line that bends by hand yet shrugs off salt, moisture, and road chemicals for years. This RightQuick tube measures 3/16 inch in diameter and 40 inches long, arriving double-flared with an M10 × 1.0 inverted flare on one end and a 3/8-24 inverted flare on the other, turning what used to be a specialty-tool chore into a quick cut-to-fit swap.

Formed from a 90-10 CuNi alloy, the line combines copper’s easy workability with nickel’s exceptional corrosion resistance and rapid heat dissipation. It is manufactured to exceed SAE J1047 and FMVSS 106 burst-pressure and whip standards, delivering OEM-grade safety whether you’re daily-driving or finishing a show-car restoration. Copper nickel bends up to sixty-five percent easier than steel, so even complex chassis curves become a one-person task, and the nickel content prevents galvanic reactions with stainless or aluminum components, keeping every union free of hidden corrosion.

At 40 inches, this length is perfect for ABS module jumpers, master-to-proportioning-valve runs, or custom hot-rod plumbing. If you need a shorter piece, simply trim, deburr, slide the nut back, and torque to spec. Like every 4LifetimeLines component, the tube is backed by our Lifetime Warranty, letting you install it once and focus on the next project with confidence.