Muelnmey 25ft 3/16" Copper-Coated Brake Line Kit — 20 Brass Fittings & Flaring Tool, Corrosion-Resistant

Muelnmey's 25ft 3/16" copper-coated brake line kit is a complete DIY solution that includes corrosion-resistant tubing, 20 brass fittings, and a flaring tool for making secure single or double flares.

This all-in-one kit packages 25 feet of 3/16" copper-coated steel brake line with a full complement of fittings and tools so you can repair or run new lines for hydraulic brake, fuel, or transmission applications. The copper coating protects the steel from rust while keeping the tube pliable enough for bending and flaring. The set is intended for experienced DIYers, home mechanics, and professionals who need a reliable, adaptable line kit without sourcing multiple parts separately.

How durable is the copper-coated tubing under road conditions?

The tubing combines a steel core for strength with a copper outer layer for enhanced corrosion resistance. That pairing helps the line withstand moisture, salt, and road grime better than plain steel tubing while remaining easy to shape during installation.

• 25 feet of 3/16" copper-coated steel tubing for extended runs
• Copper coating reduces surface corrosion and improves longevity
• Flexible enough for bends yet stiff enough to resist kinking

What fittings and tools are included, and are they compatible?

The kit contains 20 brass fittings — including tube nuts and four unions — plus a manual flaring tool, tube cutter, and tube bender. Brass hardware resists rust and pairs well with copper-coated steel; the flaring tool supports single and double flares for secure, leak-resistant connections.

• 16 inverted tube nuts sized for 3/16" tubing and 4 threaded unions
• Manual flaring tool compatible with copper, aluminum, brass, magnesium, and soft steel
• Tube cutter and bender included for clean cuts and precise bends

Which systems and vehicles can this brake line kit service?

The 3/16" line size is commonly used on many hydraulic brake circuits, fuel lines, and small transmission lines. This kit is versatile for classic cars, light trucks, trailers, and various industrial or household fluid lines where 3/16" tubing is appropriate.

• Suitable for hydraulic brake systems on many passenger vehicles
• Workable for fuel and transmission fluid lines where specified
• Also useful for industrial, agricultural, and home plumbing tasks requiring small-diameter tubing

How easy is installation for a DIYer, and what should I prepare?

Installation requires basic mechanical skills: measuring, cutting, bending, and flaring tubing to fit the vehicle’s routing. The included cutter, bender, and flaring tool simplify most tasks, but proper fittings, torque, and leak-testing are essential for safe operation.

• Measure twice and lay out tube routing before cutting
• Use the included cutter and bender for clean, precise work
• Create single or double flares and pressure-test lines after assembly

Who is this for: This Muelnmey kit fits experienced DIY mechanics, restoration hobbyists, and professional technicians who want a ready-made package of 3/16" copper-coated tubing, brass fittings, and hand tools. It's ideal when you need corrosion-resistant lines and a full set of connectors and tools for brake, fuel, or other small-diameter fluid systems. If you’re unsure whether 3/16" tubing matches your vehicle, check your factory specifications or consult a technician before installation.