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DD931 · 04-09-2019, 04:49 PM

No - just 20. Only have two ribs at the top - the rest is smooth. Not like the W14 I have which has ribs all down the insulator except where the numbers are.

04-09-2019, 04:49 PM	#3
DD931 Senior Member Join Date: May 2010 Location: PA Poconos Posts: 723	Re: Champion No. 20 Spark Plugs No - just 20. Only have two ribs at the top - the rest is smooth. Not like the W14 I have which has ribs all down the insulator except where the numbers are.