3/16" Copper-Coated Steel Brake Line Replacement Kit & Union Kit
Not sure what size you need? 3/16" is the most common brake line size — check the size chart or call 1 (855) 928-4024.
Choose with confidence
Which brake line material is right for you?
Every 4LifetimeLines tubing material is built to last. The difference comes down to corrosion resistance, how easily it bends, and price. Here's how they stack up.
| Copper-Coated Steel Cu-coated | ★ Most Popular Copper-Nickel CuNi 90/10 | Stainless Steel 304 SS | PVF-Coated Steel Poly-coated | Galvanized Steel Zinc-coated | |
|---|---|---|---|---|---|
| Corrosion resistance | ●●●●○ | ●●●●● | ●●●●● | ●●●●○ | ●●●○○ |
| Bends & flares by hand | ●●●○○Bender recommended | ●●●●●No bender needed | ●●○○○Stiff — tools req. | ●●●○○Bender recommended | ●●●○○Bender recommended |
| Strength & durability | ●●●●○ | ●●●●○ | ●●●●● | ●●●●○ | ●●●●○ |
| Best for | Budget builds needing rust resistance | DIY repairs, road-salt climates, fast installs | Show cars & custom builds, max strength | OEM-style replacement with extra protection | Budget repairs, dry climates |
| Price | $ | $$ | $$$ | $ | $ |
| Shop Copper-Coated | Shop Copper-Nickel | Shop Stainless | Shop PVF Steel | Shop Galvanized |
Copper-Coated Steel
Copper-Nickel ★ MOST POPULAR
Stainless Steel
PVF-Coated Steel
Galvanized Steel
Lifetime Quality, Covered — for Life
Zero Risk, Maximum Confidence
Built to Endure. Guaranteed to Perform.
One-Time Purchase. Lifetime Assurance.
Lifetime Quality, Covered — for Life
Zero Risk, Maximum Confidence
Built to Endure. Guaranteed to Perform.
One-Time Purchase. Lifetime Assurance.
Lifetime Quality, Covered — for Life
Zero Risk, Maximum Confidence
Built to Endure. Guaranteed to Perform.
One-Time Purchase. Lifetime Assurance.
Lifetime Quality, Covered — for Life
Zero Risk, Maximum Confidence
Built to Endure. Guaranteed to Perform.
One-Time Purchase. Lifetime Assurance.
Lifetime Quality, Covered — for Life
Zero Risk, Maximum Confidence
Built to Endure. Guaranteed to Perform.
One-Time Purchase. Lifetime Assurance.
Lifetime Quality, Covered — for Life
Zero Risk, Maximum Confidence
Built to Endure. Guaranteed to Perform.
One-Time Purchase. Lifetime Assurance.
Lifetime Quality, Covered — for Life
Zero Risk, Maximum Confidence
Built to Endure. Guaranteed to Perform.
One-Time Purchase. Lifetime Assurance.
FREE SHIPPING
Spend $50. We Cover the Rest.
BUILT TO ENDURE
No Weak Points. No Compromises.
LIFETIME WARRANTY
One Purchase. Lifetime Coverage.
TRADE FRIENDLY
Tax-Exempt Pricing for Qualified Buyers
The 4Lifetime Difference
Engineered to Last. Backed for Life.
Engineered to Last. Backed for Life.
When we say lifetime warranty, we mean it. Our products are built to endure & we stand behind them.
No Corners Cut. Ever.
No Corners Cut. Ever.
Quality materials. Proven craftsmanship.
Built with materials and workmanship we trust. No shortcuts.
A Smart, Risk-Free Buy
A Smart, Risk-Free Buy
Buy once. Be done.
This isn’t a temporary fix — it’s a long-term solution. Built-in confidence. Zero guesswork.
Straightforward. No Fine Print.
Straightforward. No Fine Print.
What you see is what you get.
Clear terms. Honest coverage. No hidden clauses. No loopholes. No runaround.
Backed for the Long Haul
Backed for the Long Haul
We stand behind every product.
As long as you own it, we’ve got your back.
