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Bosch Double Iridium spark plugs

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by AzusaPrius, Jul 10, 2020.

  1. AzusaPrius

    AzusaPrius Senior Member

    Joined:
    May 27, 2020
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    Location:
    California
    Vehicle:
    2010 Prius
    Model:
    IV
    Wanted to try these out and just took them out today to see what they look like.

    Installed 12/22/18 @ 170,768 miles
    Removed 6/10/20 @ 182,694 miles

    11,926 miles on the plugs.

    These were purchased at Pepboys. 20200710_152230.jpeg 20200710_151749.jpeg 20200710_151809.jpeg
     
    #1 AzusaPrius, Jul 10, 2020
  2. johnHRP

    johnHRP Active Member

    Joined:
    Aug 6, 2014
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    Location:
    tally, fl
    Vehicle:
    2008 Prius
    Model:
    ----USA----
    Look at mine after 100k miles, It is original Denso SC20HR11 (old) and new one Denso SC16HR11 (updated hotter range). It is almost identical within less than 1/10 mm . Double Denso Iridium is not double iridium because the ground is still platinum, just like in Denso or NGK. IT is not bad but I prefer OEM japan DENSO from local stores like Advance Auto, you can use online coupon 40% off and pick up locally.
     
    #2 johnHRP, Jul 20, 2020
    AzusaPrius likes this.
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