1/4" Copper-Nickel Brake Line

1/4" brake line shows up on longer rear runs, heavier trucks, and some fuel and transmission-cooler circuits. In copper-nickel you get a line that never rusts, bends by hand, and flares cleanly -- the last one you'll install.

When you need 1/4"

Match the tube nut on your existing line before you buy -- most brake circuits are 3/16", so confirm your run is actually 1/4". Copper-nickel routes and flares easily and is corrosion-proof for life, meeting SAE J1047 / ISO 4038 and street-legal in all 50 states.

Need the common size instead? See 3/16" copper-nickel. Shop all copper-nickel brake line, add fittings and a flaring tool, or browse all brake lines.