Home › Forum › Ask A Member › 50s Johnson sparkplug? › Re: 50s Johnson sparkplug?
August 26, 2017 at 2:11 am
#63798
Your motor of course and you can do what you want, but they are not recommended for any of the 50/60s OMCs. I would toss them out. I pop old plugs in some motors for storage if I don’t have proper ones around. THat may be why you found them.