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sullivanclan's avatar
sullivanclan
Explorer
May 22, 2016

Onan 4000 Generator Model KY - Which Spark Plug Replacement?

I've looked in the manual, I have looked on the internet, and it is just not clear what Onan spark plug number is the correct replacement for my Model number 4KYFA26100K Spec:K, unit. Suggestions?

My motorhome is a 2004.

Thanks!
Class C

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  • pnichols's avatar
    pnichols
    Explorer II
    May 23, 2016
    For several years now I've used an E3 spark plug - Part No. E3.46 - in our Class C's Onan 4000 generator. This E3 spark plug is a direct replacement for the Champion RN14YC spark plug that came in it:

    http://e3sparkplugs.com/

    The Onan always starts right up, runs with a very smooth non-labored sound, and is supposedly using a little less fuel than with a Champion spark plug.

    I also use an E3 spark plug in the little Honda portable generator that we carry along in our Class C.
  • Baja_Man's avatar
    Baja_Man
    Explorer
    May 23, 2016
    Looks like it is a #167-0275

    I just ordered from them last week. Plugs, filters, oil, etc..


    Here is the links to parts

    Onan Parts

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