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Old 10-18-2018, 10:18 PM
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What do I need to repair a jk brake line?

I just discovered that my rear sway bar caught my rear, hard brake line. It still works but it needs to get fixed as soon as possible since it's my only vehicle. That line seems to go all the way to the engine bay and no way does it look like I can simply replace it, so I'm going to try to fix it by splicing in a section of new tubing. Having said that, I have almost zero experience in this area, but I'm going for it. I measured the OD of the line at 5mm, but I don't know what size/kind of fittings I need. I will also have to order a flaring tool kit, too.

If anyone has any experience with this, can you tell me what I'm going to need? And yes, I'm gonna dump that brake line extension and install proper braided extended lines so I don't have to go through this again.


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Old 10-18-2018, 10:24 PM   #2
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You should be able to replace the hard line as a complete unit. You can either have one made but I’m guessing you can buy that line new. I’d do a complete flush too. You could also cut and splice the line, you’ll need a flare kit and could use SS braided line. Good luck.

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Old 10-18-2018, 10:38 PM
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Replacing that 6 foot line is plan B.
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Old 10-19-2018, 03:27 PM   #4
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I have been talking about this in other threads. If you have brake line drop brackets in rear and properly sized sway bar links to parallel your bar, AND you off road, it's only a matter of time!

What a headache to replace that darn long line. Don't need that to be my weekend project. Everyone who installed a lift, go get extended brake lines instead of the drop bracket!
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Old 10-19-2018, 04:13 PM
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Lesson learned, that's for sure. What sucks is that I had the extended brake lines for months, but it was a pain to find someone to come over and help me bleed the brakes. Finally, I ordered a Motive Power Bleeder and was eager to try it, and this is what I found. Too late.

I try to do *all* repairs on my Jeep, but I have no experience with this, and nobody else seems to, either. I made an appointment with an independent shop this morning to repair it. Sigh...
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Old 10-19-2018, 05:47 PM   #6
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Local parts stores in my area (Advance auto) have replacement brake line in sections or in coils. They also lend the flaring tool and have the brake line unions and parts. I have used the Cu-Ni brake lines which are easier to use and don't rust out.
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Old 10-19-2018, 11:39 PM   #7
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I did the same thing.. Did not trim my new sway bar link bolts and yanked the line. Be sure to trim any bolt past the nut off.


I replaced the entire line from the master all the way back with a new oem one, and it was actually pretty easy.
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Old 10-21-2018, 06:53 PM   #8
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Do the whole line. By the time you get line and flare it you'll be behind in time and money. Also should brake line not be double flares?
Should the sway bar link have the bolt head towards the frame? Mine is and even then the head of the link ball joint rubs the frame under full articulation. I bent the brake line a little up so that it would not hit.
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Old 10-24-2018, 09:54 PM   #9
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The line didn’t cost much from the dealer.
I had a little plastic cap to plug the master for when I had to disconnect the line from it.

First I unwrapped the heat wrap surrounding the line under the jeep, disconnected a few plastic retaining clips and then finally disconnected and pulled the line out through the hood area. Then fed the new line through the same way and connected everything up. Then bled the brakes. Easy peasy
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Old 02-14-2019, 01:58 AM   #10
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How did you fix this? i just found mine bent and it is also a metalcloak draglink
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Old 02-14-2019, 09:33 AM   #11
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Thanks for the heads up. Just got done with my MetalCloak lift and I can definitely see this happening. You think trimming the bolt will be the end all fix?
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Old 02-14-2019, 09:54 AM   #12
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Another vote to do the whole line, I'll add check the other side and do at the same time.
Seems like a pita to do but once you do it it isn't all that bad.
Get the right tools and do the job right once.
Brakes are pretty important, I never understand why so many want to get cheap when it comes to brakes.
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Old 02-14-2019, 11:58 AM
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Dang... my bad for not following up on this thread. I ended up having my fabricator do while it was in for something else. I never did figure what what I needed.

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