4LIFETIMELINES 3/16 in x 25 ft Stainless Steel Brake Line Kit — 316L Marine‑Grade, 16 SAE Fittings

4LIFETIMELINES 3/16" x 25' brake line kit is a complete 316L marine-grade stainless steel tubing set with 16 SAE fittings engineered for long-lasting, rust-resistant brake line replacements on cars and trucks.

If you need a single-box solution to replace corroded or damaged brake lines, this kit supplies a continuous 25-foot coil of 3/16" 316L stainless tubing plus a full assortment of SAE fittings. The marine-grade alloy is chosen for its superior resistance to salt, moisture and chemical exposure, while the heavy wall and high burst rating cover modern braking system pressures. The package is tailored for DIY mechanics, restoration projects, and professional shops that want reliable, serviceable tubing without hunting down fittings.

How strong and reliable is the tubing under real braking conditions?

The tube is manufactured from 316L stainless steel with a 0.028" wall thickness and a tested burst pressure of 15,310 PSI, exceeding typical hydraulic brake system demands. It’s compatible with DOT 3, DOT 4, DOT 5 and DOT 5.1 brake fluids and resists cracking under pressure and heat cycling.

• 15,310 PSI maximum burst pressure rating
• 0.028" wall thickness for durability
• Compatible with major brake fluids
• 316L alloy resists pitting and stress corrosion

Will the tubing resist rust and road-salt exposure?

Yes — 316L is a marine-grade stainless alloy formulated to endure saltwater and chemically aggressive environments, making it far less prone to rust than copper-nickel or ordinary stainless. This kit is ideal for vehicles in salt-belt regions or coastal climates where conventional lines corrode quickly.

• Marine-grade 316L composition for superior corrosion resistance
• Reduced pitting, flaking and weakening over time
• Preferred for winter, coastal, and industrial exposure
• Longer service life than galvanized or Cu-Ni lines

How easy is it to install and finish fittings?

The tubing is designed to bend smoothly, cut cleanly, and accept common flares without specialty tools. It works with standard tubing benders, cutters, and single or inverted flaring tools, so both home mechanics and pro technicians can complete jobs quickly.

• Bends easily by hand or with standard bender
• Cuts cleanly with a tube cutter—minimal deburring
• Accepts single and double/inverted flares with common tools
• Comes with 16 SAE fittings for broad compatibility

What fittings are included and which vehicles are covered?

The kit contains one 25' coil of 3/16" tubing plus a comprehensive assortment of SAE fittings to handle most domestic and import brake systems. The 3/16" outside diameter is the most common brake line size, so this kit suits full replacements, partial repairs, classic restorations, and custom builds.

• Includes 16 SAE fittings of multiple thread types and sizes
• Fitting mix covers 7/16-24, 3/8-24, 9/16-18, 1/2-20, M10x1.0, M12x1.0
• One kit fits many cars, trucks, restorations and fleets
• Designed for universal application across domestic and imports

Who is this for? If you’re replacing rusted brake lines on a winter-driven vehicle, restoring a classic, building a custom chassis, or managing fleet maintenance and want a single durable solution, this 4LIFETIMELINES kit provides a high-performance, corrosion-resistant tubing and the fittings required to finish the job. It’s for DIYers who want reliable, serviceable components and for shops seeking a robust, ready-to-use kit that reduces parts sourcing and repeat failures.