Reply To: 1955 25hp Johnson RDE-17 spark plugs

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April 30, 2021 at 12:13 pm #237443
Casey Parr
Participant

    Yeah I’ll stick with the J6C. That was very informative and detailed. I’m glad I ask a second opinion. I also saw J6J online, I thought those plugs were no longer available. I must have read something else on a different plug…Is the J6J about the same or better?