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Useful spark plug charting / online tool

Cobra Jet

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I’m not sure how many have used this or have even come across it, but thought it would be beneficial to post it.

This NGK link has many charts for conversions/lookups/identifiers that will answer many of the questions seen on this site regarding factory plug “hotter” or “colder” ranges to NGK heat ranges, etc. it’s a very beneficial tool, because it can be used to cross reference other known plug questions for comparison.

https://www.ngk.com/learning-center/5-charts-tools
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3pdl

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i love resources like this.
 
 








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