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Fiamm horns

Discussion in '348/355' started by Carmellini, Jul 12, 2025.

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  1. Carmellini

    Carmellini Formula Junior

    Jul 16, 2019
    968
    #1 Carmellini, Jul 12, 2025
    My longer deeper tone trumpet emits a two pitch sound like a hee haw....a higher sound, and then a deeper one. Not sure what might be wrong? A leak in the housing?

    Does anyone know if the current replacement horns are metal or plastic?
     
  2. Carmellini

    Carmellini Formula Junior

    Jul 16, 2019
    968
    #2 Carmellini, Jul 13, 2025
    Testing confirms compressor and high tone/shorter horn are perfect and there is no
    way to repair the bad horn

    Would like to know if the new replacements are the same sound/tone
    and if they are metal or plastic.

    Looks like the same part number is for 328, 348,355, and 550 cars so should not
    be a problem finding something used

    Anyone out there have one or a set for sale?
     
  3. cuneo

    cuneo Formula 3
    Silver Subscribed

    Nov 20, 2006
    2,469
    #3 cuneo, Jul 16, 2025
    I had my shop somewhat recently replace the poor aftermarket horn that came with the 348 with a new Fiamm unit. It is much quieter and less “brassy” than the horn that is in my F355 which I believe is original. Somehow they're different, probably new ones cheaply made in China or something.
     
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  4. Carmellini

    Carmellini Formula Junior

    Jul 16, 2019
    968
    #4 Carmellini, Jul 16, 2025
    ^^^Agreed, I think the difference is new horns are plastic, while the originals are metal.
     
  5. cuneo

    cuneo Formula 3
    Silver Subscribed

    Nov 20, 2006
    2,469
    #5 cuneo, Jul 16, 2025
    Sounds about right. Bummer!
     
  6. Carmellini

    Carmellini Formula Junior

    Jul 16, 2019
    968
    #6 Carmellini, Jul 22, 2025 at 9:06 AM
    Ross @GTCarParts was able to supply me with a good used horn
    and the sounds are glorious once more. Thanks Ross.
     
  7. 308 GTB

    308 GTB F1 World Champ
    Rossa Subscribed

    Feb 7, 2002
    11,718
    New Jersey
    Full Name:
    Barry Wolinsky
    #7 308 GTB, Jul 22, 2025 at 6:44 PM
    It's times like this when I'm happy I have an F355 Challenge. The original horn was removed years ago because the steering wheel had to have a quick-release hub rendering a horn button inoperative.

    To keep my car street legal, I had to install a horn. I chose a reproduction 1969 Plymouth Roadrunner horn...


    Image Unavailable, Please Login


    As my electric door locks were removed, I have the horn wired to the passenger side momentary door lock switch...


    Image Unavailable, Please Login



    It sounds like this...





    :D
     
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