1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Denso: spark plug number change?

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

  1. yeldogt

    yeldogt Active Member

    Joined:
    Jan 20, 2012
    810
    313
    0
    Location:
    NE
    Vehicle:
    2011 Prius
    Model:
    Five
    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

    Joined:
    Aug 6, 2014
    417
    130
    0
    Location:
    tally, fl
    Vehicle:
    2008 Prius
    Model:
    ----USA----
    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
     
  3. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,473
    38,103
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    @yeldogt hasn't posted in over two years.
     
  4. taxidriver50005

    taxidriver50005 Active Member

    Joined:
    Jan 3, 2017
    204
    169
    0
    Location:
    GB
    Vehicle:
    2012 Prius
    Model:
    Excel
  5. xliderider

    xliderider Senior Member

    Joined:
    Apr 19, 2012
    7,842
    3,099
    0
    Location:
    Honolulu, HI
    Vehicle:
    2011 Prius
    Model:
    Three
    Installed Bosch double iridium 9621 spark plugs, (0.044) gap, a few thousand miles back.

    Been running great.

    Posted via the PriusChat mobile app.
     
    ASRDogman likes this.
  6. ASRDogman

    ASRDogman Senior Member

    Joined:
    May 29, 2018
    5,836
    3,136
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    Two
    Those are what I've been using...

     
    xliderider likes this.
  7. xliderider

    xliderider Senior Member

    Joined:
    Apr 19, 2012
    7,842
    3,099
    0
    Location:
    Honolulu, HI
    Vehicle:
    2011 Prius
    Model:
    Three
    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.
     
  8. mr_guy_mann

    mr_guy_mann Senior Member

    Joined:
    Sep 3, 2020
    3,206
    1,337
    0
    Location:
    NJ-USA
    Vehicle:
    2006 Prius
    Model:
    Four
  9. xliderider

    xliderider Senior Member

    Joined:
    Apr 19, 2012
    7,842
    3,099
    0
    Location:
    Honolulu, HI
    Vehicle:
    2011 Prius
    Model:
    Three