Re: 1968 johnson 20 long shaft parts fit 1971 short shaft?

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March 31, 2017 at 12:24 pm #55255
Leon
Participant

    I believe that these are ALL interchangeable in the 15, 18, 20 and 25, from 1955 – 1973. 1955 – 1957 10hp, as well. The 5 bolt lower had a common cross over, even though the gear case and cavy plate was different in appearance. Like Mumbles said, just make sure the drive shaft has the 4 splines. Military and commercial models may be like 21 splines on the top of the shaft.