SPARK PLUG FOR TUNED ROAD ENGINES

Find this product in the diagrams below:


A higher compression engine should have a colder spark plug. The engineers explain that it has to do with flame temperature and overheating the plug. I know from experience that my race engine will melt a street plug! Choose from the following NGK plugs: Cold Street=BP7ES Colder Street=BP8ES Cold Race=BP9EV Coldest Race=BP10EV

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