3/16" x 25' Stainless Steel Brake Line Kit – Marine-Grade Tubing + Fittings

Upgrade your braking system with the 4Lifetime 3/16" x 25' Stainless Steel Brake Line Kit, built for unmatched durability, precision, and corrosion resistance. Whether you're replacing old brake lines or completing a custom build, this marine-grade stainless steel kit delivers long-lasting performance and pro-level results.

Marine-Grade 316L Stainless Steel
Crafted from 316L stainless steel, the tubing is engineered to resist rust, corrosion, and extreme weather. The 0.028" wall thickness offers superior puncture resistance and supports high-pressure applications—ideal for daily drivers, off-road builds, or classic restorations.

DOT-Fluid Compatible & Leak-Free Performance
Fully compatible with all DOT-approved brake fluids, this tubing ensures safe and secure operation under real-world driving conditions. Paired with 16 precision-machined SAE and metric fittings, the result is a tight, leak-free seal every time.

Flexible and DIY-Friendly
Despite its strength, this stainless steel brake line is easy to bend and flare—allowing you to route lines through tight spaces and create clean inverted flares with standard tools.

Complete Kit Includes:

25 ft of 3/16" marine-grade stainless steel tubing

16 stainless steel fittings:

2 x (7/16-24 inverted)

4 x (3/8-24 inverted)

2 x (M10 x 1.0 bubble)

2 x (M10 x 1.0 inverted)

2 x (9/16-18 inverted)

2 x (1/2-20 inverted)

2 x (M12 x 1.0 bubble)

Key Benefits:

Made from 316L marine-grade stainless steel

Corrosion-resistant, high-pressure tubing

Compatible with DOT brake fluids

Includes 16 fittings for versatile applications

Bends and flares easily for clean installation

Backed by 4Lifetime’s lifetime warranty

Built for the road. Trusted for life. Make every stop count with 4Lifetime.