Denso: spark plug number change?

Discussion in 'Gen 3 Prius Main Forum' started by yeldogt, Jul 24, 2018.

  1. yeldogt

    yeldogt Active Member

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    I see that Toyota moved to a different plug (Originally SC20HR11 ... now SC16HR11). My experience is that Toyota typically uses Denso as OE supplier .. vs NGK.

    I'm sure they are fine .... seem to be hotter.

    Any experience -- I'm going to order a set in case I need ... we have other Prius .. so they will get used if I don't put them in the Gen 3's.

    Looks like the NGK part has not changed
     
    #1 yeldogt, Jul 24, 2018
    Last edited: Jul 24, 2018
  2. johnHRP

    johnHRP Active Member

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    Toyota increase the heat range/hotter in Prius and Corolla. So, Denso increase the heat range 1 step higher from SC20 to SC16. The SC20HR11 is not made anymore. You found on the market as left over from previous production batch
     
    #2 johnHRP, Nov 5, 2021
  3. Mendel Leisk

    Mendel Leisk Senior Member

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    @yeldogt hasn't posted in over two years.
     
    #3 Mendel Leisk, Nov 5, 2021
  4. taxidriver50005

    taxidriver50005 Active Member

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    #4 taxidriver50005, Nov 5, 2021
  5. xliderider

    xliderider Senior Member

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    Installed Bosch double iridium 9621 spark plugs, (0.044) gap, a few thousand miles back.

    Been running great.

    Posted via the PriusChat mobile app.
     
    #5 xliderider, Nov 5, 2021
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  6. ASRDogman

    ASRDogman Senior Member

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    Those are what I've been using...

     
    #6 ASRDogman, Nov 5, 2021
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  7. xliderider

    xliderider Senior Member

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    Runs around $8 a plug in retail car parts stores. I got a set of 4 with free shipping for $27 and change off eBay.

    Posted via the PriusChat mobile app.
     
    #7 xliderider, Nov 5, 2021
  8. mr_guy_mann

    mr_guy_mann Senior Member

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    #8 mr_guy_mann, Nov 6, 2021
  9. xliderider

    xliderider Senior Member

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    #9 xliderider, Nov 6, 2021
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