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Discussion Starter #1
Using champion s59yc plugs today but would like to change to a ngk plug with non projected tip cause i keep hearing a projected tip is not great for a 200+ shot of nitrous.
What part nr ngk plug would that be ?
 

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If its 14mm 3/4" reach threads, the R5671A-9 should do for you, they are made from -7 to -11 with 7 hotter and 11 coldest.
 
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