Attitude928 Posted June 20, 2017 Share Posted June 20, 2017 Need Spark Plug Insert (presumed #6) 1909 Oakland 20B Link to comment Share on other sites More sharing options...
Attitude928 Posted June 21, 2017 Author Share Posted June 21, 2017 Here it is. The actual overall length is just shy of 3-1/8 in. The diameter is .710 thousands which equals 18mm Link to comment Share on other sites More sharing options...
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