not sure about the brand . my motor is a evinrude . i use a UL77JC4 champion i think.some come with the surface gap which will foul easier with rich running motor or long period of idling . always after a long period of slow or idle speed run at WOT and burn out all the build up of oil .the newer motors with oil injection i think put less oil when idling . thats what a mercuray . mechanic told me .


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Bought some cheaper autolites at Advanced, but the elctrodes are way smaller. Not sure how well they will do.
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