What are the best spark plugs

#1
I was wondering for a viper 99cc engine and a predator 80cc engine what are the better plugs to use? I was in menards and read the book they have to cross reference but the plug that came out of the viper was a torch e4rc and all they had listed started at f. There where not any predator engines listed either.
 

DaddyJohn

Well-Known Member
#2
Looks like NGK BPR8HS for the Viper, and NGK BP5HS for the Predator.

I'd verify across a couple more sources just to be sure, but you can't go wrong with NGK plugs.
 
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