You can use them, but it's a waste of money, they don't resist fouling any better than a standard plug. The only real advantage with them is that the electrode lasts longer, not really an issue in a snowmobile.
Stay w/the standard plug, because they work and are cheaper. And if they are fouling out you might want to go a step hotter(br9 to a br8). Check the hotter plug after running it for a little bit. Don't go too hot though as this will cause engine damage. Good luck.
NGK makes a "v" plug that works well for preventing fouling. It is a br9ev. The electrode is about half the size and concentrates the arc more thereby burning off excess better. Work great for me. :devil: SWRules
The ? should be why are you fouling? Have you cleaned your carbs lately? Maybe you need to rejet? Everybodies right fancy plugs are a waste in a two stroke. :thumbsup: Try cleaning the carbs and youll say some money.
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