Reply To: 18hp piston rings

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September 28, 2026 at 4:30 pm #329274
Bob Wight
Participant

    US Member

    When I rebuilt my FD-12 a couple years ago, I used ring set #378415 which is the superseded number to 300050.  There are a number of the 378415 rings for sale on ebay right now.

    Bob

    1937 Champion D2C Deluxe Lite Twin
    1954 Johnson CD-11
    1955 Johnson QD-16
    1957 Evinrude Fastwin 18
    1957 Evinrude 3022
    1958 Johnson QD-19
    1958 Johnson FD-12
    1959 Johnson QD-20
    1982 Evinrude 25hp

    “Every 20 minute job is only a broken bolt away from a 3-day project.”
    "Every time you remove a broken or seized bolt an angel gets his wings."