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Spark plugs with no ground electrode?

SquatsMcGee

New member
Recently bought these NGK spark plugs for my 1990 Johnson 90, as recommended by West Marine.

I know zilch about engines, but these particular spark plugs seem to have no ground electrode, which is very confusing for someone attempting to install spark plugs for the first time.

Am I just totally clueless, do I possibly have the wrong product? Thanks a lot. I included a picture for reference purposes.

http://imgur.com/yeph6
 
Sparkplugs like that have been around for outboards for some 40 years.----Considered a good choice for continuous full throttle type running.-----------Try Champion QL77J4C or equivalent for trolling type running.
 
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