Re: Power Head Gaskets

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September 25, 2017 at 9:48 pm #65374
chris-p
Participant

    Here is the run down on Base Gaskets for the ’55 to ’58 5.5hp and 7.5hp OMCs. As you found, they can differ slightly. BE CAREFUL not to mix them up! Been there, done that.

    EVINRUDE

    MODEL YEAR HP PART #
    5512/5513/ ’56/ 5.5/ 304314
    5514/5515/ ’57/ 5.5/ 306205
    5516/5517/ ’58/ 5.5/ 306205
    5518/5519/ ’59/ 5.5/ 306205

    7518/7519/ ’55/ 7.5/ 303467
    7520/7521/ ’56/ 7.5/ 304314
    7522/7523/ ’57/ 7.5/ 304314
    7524/7525/ ’58/ 7.5/ 304314