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Thread: Spark plugs

  1. #1
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    Spark plugs

    Do you recomend the original harley spark plugs or should I go with a different brand

  2. #2
    Senior Member Cooter's Avatar
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    NGK iridium plugs in heat range 8 or 9 are commonly recommended. I would suggest you do a little searching. All of these questions you are asking in every thread you start are right here in the forum.

    Welcome! Check out the info here Lots to learn about you new bike.

  3. #3
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    Ok sorry this is my first time for any of this I dont even have Facebook.

  4. #4
    Senior Member Cooter's Avatar
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    I don't either and I'd recommend staying away from FB, LOL

  5. #5
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    No problem there my past can stay there lol

  6. #6
    Senior Member konarider94's Avatar
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    NGK DCPR8EIX works great (#6546 if you go to an auto parts store and ask about them). A lot of people think they should go 1 step colder and use a 9 heat range, but I dont agree. Stick with stock heat range unless you're adding forced induction or raising the compression.

  7. #7
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    Ok cool it is stock and has the harley 10r12a in it now
    Last edited by Sdrxb12s; 05-04-2020 at 01:14 PM.

  8. #8
    Senior Member konarider94's Avatar
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    Quote Originally Posted by Sdrxb12s View Post
    Ok cool it is stock and has the harley 10r12a in it now
    Thats correct. Different manufacturers use a different number scale for heat range. The stock 10r12a is equivalent to the NGK dcpr8e. I recommend adding the ix suffix to get the iridium version.

  9. #9
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    Awsome the more I can stay away from the dealer the better and I already use ngk in everything I drive or push so I am already brand loyal

  10. #10
    Senior Member rb70383's Avatar
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    This helps me as ell. I need to do plugs and my other vehicle doesn't even have spark plugs...



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