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Old 10-16-2019, 10:58 PM #1
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Front hard brake line into caliper leaking - please help!

Hey all,

So I was changing my pads and replacing some studs on the front passenger side, and after bolting the caliper back on, the hard brake line going from the caliper to the bracket started leaking.

I've heard from a lot of other T4R Canadians that these OEM S-shaped lines are either not being made any more or take weeks to get which is frankly not-desirable.

The part stores sell these:
H. Paulin CN351 Copper Nickel Brake Line, Standard, 51 x 3/16-in — Partsource

Is this the right kind of line? I know 3/16 is correct (and there's various sizes for sale) but it doesn't list the fitting (just that it's Japanese). I was planning on picking up a line bender and a couple 12" just in case.

Anything else I'd need just in case? Thanks in advance
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Old 10-17-2019, 05:49 AM #2
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I'm confused. A hard line can not come from the caliper. The wheels move so a hose is needed/used. The hose begins at the bracket you describe...

?
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Old 10-17-2019, 07:01 AM #3
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Brake lines

Hello, the brake lines are still available. I did not have any luck finding them on a parts diagram but a quick call to Conicelli Toyota and I had them in five days. I don't know about shipping to you but it might be worth a call.
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Old 10-17-2019, 07:47 AM #4
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I was doing my last brake job and flustered a bad front hard line. Was late on a Saturday and I was able to get a temporary generic straight line from Oreillys, I just bent to fit. Be aware, both sides are different, one side is beveled, the other is straight. I was able to get the OEM lines from a dealer with next day delivery when they opened that Monday.
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Old 10-17-2019, 08:13 AM #5
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Quote:
Originally Posted by The Cold War Kid View Post
I'm confused. A hard line can not come from the caliper. The wheels move so a hose is needed/used. The hose begins at the bracket you describe...

?
There's a short hard line after the soft line.
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Old 10-17-2019, 08:48 AM #6
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The caliper small hardline is 3/16 with Japanese ends. I was in the same boat when my caliper piston pushed out too far and I had to replace the front calipers on my Tetanus 1 [1998 4 runner] so I bought remfg from napa and put the shortest ni cu line napa had 6 or 8 inch I believe.

Like other posters suggested the OEM brake lines are still available for purchase and that is what I would have normally used.


If you pull the clip that holds the rubber line union to its bracket you can use the rubber line as it flexes some so you dont damage the mini metal line while changing pads or rotors.

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Old 10-17-2019, 10:21 AM #7
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Thanks for the help everyone - I'll try the dealer then the part store for the Japanese line like suggested.
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Old 10-17-2019, 11:36 AM #8
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You can go to NAPA, Advance etc and get the replacement line. You must bend it but its not really a big deal to do. The price is WAY cheaper than a Toyota dealer price. I just did mine a few months ago and its super easy. good luck
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Old 10-17-2019, 03:03 PM #9
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Quote:
You can go to NAPA, Advance etc and get the replacement line. You must bend it but its not really a big deal to do. The price is WAY cheaper than a Toyota dealer price. I just did mine a few months ago and its super easy. good luck
When you got the replacement is it just the pre-flared/fitted Japanese line?
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Old 10-17-2019, 09:27 PM #10
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All you need is an 8" piece of brake line from any parts store that is 3/16"X 10mm-1.0 inverted flare. It's just a 3/16" brake line with metric thread AKA Japanese style brake line. Euro would be 10mm-1.0 bubble flare, SAE is 3/8-24 inverted flare.
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Old 10-18-2019, 07:39 AM #11
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Quote:
Originally Posted by MaineRunna View Post
All you need is an 8" piece of brake line from any parts store that is 3/16"X 10mm-1.0 inverted flare. It's just a 3/16" brake line with metric thread AKA Japanese style brake line. Euro would be 10mm-1.0 bubble flare, SAE is 3/8-24 inverted flare.
Yup that is exactly what I purchased. I didn't have the length written in my notes but it's the 3◊16 10mm -1.0 inverted flare. As mainerunner explained. :]

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Old 10-19-2019, 06:48 AM #12
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FYI: They're quite affordable from the dealer. I just ordered the equivalent lines for my 2000 Tundra and they were $6.58 each... pre-bent perfect fit.

Toyota calls them Front Brake Tubes. Given the interchangable parts between the Tundra and 4Runner, it wouldn't surprise me a bit if they were the same part number.

Edit: If you're going to roll your own, it's not a bad idea to have a tubing bender. It's not absolutely necessary, but but for $10, you'll get better bends, and you won't have to worry about kinks. Plus, you'll have a new tool!

I have one similar to this one from Harbor Freight and it works well:

Last edited by tvpierce; 10-19-2019 at 06:55 AM.
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Old 10-19-2019, 08:11 PM #13
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Quote:
Originally Posted by smerhej View Post
When you got the replacement is it just the pre-flared/fitted Japanese line?
yes,
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Old 10-19-2019, 09:16 PM #14
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For my 2000 SR5 4WD I just got new hard lines.

I got the ones from the caliper to the flex hose and the ones directly after the flex hose for both sides.

Part numbers are:
47314-35330 Tube Front Brake No.4
47316-35250 Tube Front Brake No.6
47315-35320 Tube Front Brake No.5
47313-3D050 Tube Front Brake No.3

They were the correct parts I was looking for. However, I dont remember which ones were the lines going to the caliper. 6.56$ each.
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Old 09-11-2023, 12:17 PM #15
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Thanks, what I needed to know as well. Wonky brake line on my 98 4runner, passenger side too
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