Home › Forum › Ask A Member › plug, Johnson MD 39 › Re: plug, Johnson MD 39
March 11, 2015 at 5:32 pm
#11827
I bought mine off EBay under Harley Davidson restoration. They have all styles in solid brass in all thread counts for NGK and Champion or others. Not sure what thread count for NGK is , but I bet Mumbles knows!
Dan in TN