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1,036 Posts
I dont know what plugs the Firecats use, Did Arctic Cat decide to use NGK BR9ECS plugs also?? Does anyone know the differance between BR9ES? 
BR9ES and BR9ECS WHats the differance?
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Joined
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154 Posts
Cat has always used the BR9EYA ,the difference is in the electrode . The heat range is the same.
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