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What's the difference between BR9ES, BR9ECS and BR9EYA??
 

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the BR9ES and the BR9ECS are basically the same except the ECS ground electrode is shorter and the inner part at the end of the threads is beveled. less metal means less heat. the BR9EYA has a longer V-grooved center electrode than the ES.
 

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Discussion Starter · #8 ·
i am going to run the br9es. the ecs plug they put in for the recall doesnt impress me at all for $7 a plug. I have run the br9es plugs in race motors for jet skiis and they ran better than any hi dollar race plug i ever used. thanks for the replys guys. happy sleddin.
 

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I don't think they claim the br9ecs to be a race plug.  I was told that the br9es could really be anywhere from a 6 to a 9 as far as heat.  But the br9ecs will be a 9 spot on, so you know exactly what you are getting.  Sounds like cheap insurance to me.  I'm putting them in mine.
 
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