I need to know what size flare nut wrenches I should get so I can replac emy screwed up brake lines. Any help is great!

I believe they are 11mm.

If you've got a stubborn one, try what I did. My flare nut wrench was actually rounding out one of the line nuts, the nut was on so tight. So I broke out the huge SOB adjustable wrench... the 12 incher. I tightened it down on the line nut, and gave the wrench some quick & hard "pushes"- and the nut broke free. Just something to try!

And the banjo bolt is also 11mm. Make sure you get new crush washers with the brake line... if they don't come with the hoses, you can use the new hose to determine which size you need. The crush washers (one for each side) should "fill" all of the ridges on the square fitting of the brake hose. It should not extend past the ridges!

And don't let your master cylinder run dry, or you'll have a nightmare. The rearmost m/c reservoir (near firewall) is for the FRONT brakes, and the frontmost reservoir is for the REAR brakes. It's easy to confuse them if you're in a hurry and not thinking.

My brake lines actually had different sizes.......11mm sounds about right and I know there was one bigger also....rear over the axle line I believe....but they were all metric if I remember right.

Cool thanks for the help guys!!!!!!! :hail: :lala:

BitchinRS, what year is your car? It makes a difference. Different years have different sizes.

1992 Camaro RS 3.1L