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All ignition related articles
- Site Admin
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Description: Overview of spark plugs
NGK: Part No. Standard R5670, Plug Gap .030
Autolite (1948 - 1974): standard 4275, Premium MP4275 gap: 0.25
Champion: J-12Y or J-12YC
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Does the R in the NGK # R-5670-5 mean it is a resister plug?
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"R" is for resistor type.