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Need part number for a brake line

Discussion in '3rd Gen 4Runners (1996-2002)' started by stewharr, Feb 3, 2025.

  1. Feb 3, 2025 at 2:59 PM
    #1
    stewharr

    stewharr [OP] New Member

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    My son's 1997 4Runner SR5 3.4L RWD had a ball joint failure on the driver's side. Looks like the only real damage other than the tire getting eaten up by the pavement was the flexible line getting freyed and this hard line getting straightened out. I may try to bend the hard line back into shape, but if I could find a part number for this piece I may just replace it to be on the safe side. Any idea what the part number could be? I'm not having much luck figuring it out via the Toyota parts catalogs online. Thanks.

    upload_2025-2-3_17-57-20.png
     
  2. Feb 3, 2025 at 9:21 PM
    #2
    turbodb

    turbodb New Member

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    For the soft lines, you should take the opportunity to replace with these stainless steel lines. They'll last longer, give you better performance, and a pair - with clips - is cheaper than the OEM lines.

    For the hard line, you're looking at 47315-35320
     
    roboturner likes this.
  3. Feb 4, 2025 at 6:40 AM
    #3
    negusm

    negusm New Member

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    How can they last longer? The OEM ones last 25 years or more. I replaced all mine and every one was perfect with no cracking or separation.

    My understanding is that stainless steel lines have tons more failures as well.
     
  4. Feb 4, 2025 at 6:51 AM
    #4
    negusm

    negusm New Member

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    For OEM part numbers, go to partsouq.com and put in your vin. Then use the diagrams to find the part and part number. It's very helpful. It's important you use your vin because it will filter out all the foreign models.
     
  5. Feb 4, 2025 at 7:55 AM
    #5
    turbodb

    turbodb New Member

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    Rubber, over time, degrades on the inside, leading to crap in your brake fluid and collapsing of the lines that you can't even see from an exterior inspection. I'm not sure where you heard that stainless steel has tons more failures, but that's the exact opposite of the general consensus, which is why premium brake lines are all braided stainless steel.
     
  6. Feb 4, 2025 at 8:30 AM
    #6
    negusm

    negusm New Member

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    Here's a good vid of the pros and cons.

    https://www.youtube.com/watch?v=csV5gQo9wmc

    Stainless brake lines to the calipers are purely a track application. Otherwise, you have to inspect them constantly. Manufacturers don't like them because they fail.

    I for one, would NOT want to use them in an off road application. They don't take near the abuse that rubber lines do. Plus you can't pinch them off with a vice grip as easily if you get stuck.
     
  7. Feb 4, 2025 at 9:03 AM
    #7
    turbodb

    turbodb New Member

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    I mean, I think you can probably find info that says anything you want on the internet, and there are obviously tradeoffs (cost, peformance, etc.) either way with any decision.

    https://www.youtube.com/watch?v=CUSXq3pVmB8

    Even that video you shared stated that with high temp braking operations, SS is often better.

    Personally, I look at all the performance brake lines out there, and they are all braided stainless steel. Personal experience with a Tacoma, 4Runner, and motorcycle (again, for me) have shown stainless to perform better in braking situations. Some of that is probably because I have heavy rigs that generate a lot of temperature when braking. The larger calipers of the Tundra Brake Upgrade help to dissipate that heat, and the SS lines help to reduce the effect of the heat on the lines.

    As for inspecting brake lines - it needs to be done with any line on a regular basis, so I don't see there being any negative to SS or rubber in that case. For trail repairs, any vice grip can easily compress a SS line just the same as rubber.

    Does everyone need it them? Obviously not, OEMs don't generally install them b/c rubber will work for a lot of people (and b/c it saves them a few bucks). Is it worth doing when you're in there? To me it is, but it's obviously everyone's individual decision.
    :cheers:
     

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