Wiper arm cap revisited | FerrariChat
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Wiper arm cap revisited

Discussion in '365 GT4 2+2/400/412' started by dan_tank, Jun 21, 2024.

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  1. dan_tank

    dan_tank Rookie

    Apr 30, 2024
    17
    Cambridge, UK
    Full Name:
    Dan K
    #1 dan_tank, Jun 21, 2024
    I can see that the wiper arm cap for the 412 is hard to find (part number 257-84-416-00). peder412 made a mould and made some new ones - very clever (see https://www.ferrarichat.com/forum/threads/cover-for-viper-arm-ferrari-412.472964/#post-145538383). I have one only and I can see the dimensions and shape. I am not sure I am skilled enough to make a mould.

    It seems very likely that this was a standard OEM part supplied by OSLV and there must be many cars out there with the same cap. In that thread Cdcasarella says "I have found a Porsche part that will fit on the wiper arm of a 412 with some trim work . the Porsche part # is 993 628 305 00." This part looks quite similar so I gave a Porsche parts supplier a ring and they kindly measured this part and assured me that it was 22mm wide. This seems to be the same as a very similar-looking part for a Ford that I have also seen. We need the fat part of the cap to be 25mm wide.

    Has anyone solved this problem?
     
  2. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
    14,413
    Canada
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    Newman
    #2 Newman, Jun 21, 2024
    My 81 has one cap as well and the parts book says its a Belgium market thing if I recall correctly (which my car is and lived in France). I tried to get a new one and they are NLA as you know.
     
  3. samsaprunoff

    samsaprunoff F1 Rookie
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    Jun 8, 2004
    4,423
    Edmonton, AB Canada
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    Sam Saprunoff
    #3 samsaprunoff, Jun 21, 2024
    Good day Dan,

    If you have one good one, find someone to CAD up the part and then have it 3D printed. Home 3D printers produce OK to reasonable results, but to have a top notch result, you can send off the CAD file to one of the many 3D printing companies that have the big $ 3D printers ... and it shows in the resulting 3D print with relatively low/moderate cost.

    Extracting a mold and then recreating the part is not super complicated, but it is a process, has a bit of a learning curve, and takes a bit of experience. Consequently, it can be done with modest upfront $ and the time.

    Cheers,

    Sam
     
  4. raemin

    raemin Formula 3

    Jan 16, 2007
    2,310
    Lyon (FR)
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    R. Emin
    #4 raemin, Jun 22, 2024
    A silicon mould is easy to create, but the part looks very thin, I am not sure black PU coumpound would age well. It's stronger than 3D, but brittle.
     
  5. dan_tank

    dan_tank Rookie

    Apr 30, 2024
    17
    Cambridge, UK
    Full Name:
    Dan K
    #5 dan_tank, Jun 22, 2024
    Using CAD, I would say that most parts of the item could be made quite a bit thicker without changing the look very much.
     

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