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Spark plugs

748 Views 2 Replies 3 Participants Last post by  fivepointnine
What spark plugs are you 20psi+ 300hp+ guys using?
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NGK stock number 1095, prt number BCPR7es-11
the NGK 1095's are really the only one to be using, and it has been suggested they get changed every oil change or 2
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