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  1. #1
    Steve STSPERFORMANCE's Avatar
    Join Date
    Dec 2007
    Cambridge, Ohio

    Arrow check valve on back of guage cluster

    what is this for

  2. #2

    Join Date
    Sep 2007
    Lexington, Ky
    It's a one way valve to allow the display to breathe, but prevents moisture from getting in and fogging it up. Or thats my best guess after examining one.

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