Denso Spark Plugs

Discussion in 'Performance & Fuel' started by Jacqson, Feb 12, 2010.

  1. Jacqson

    Jacqson Rockstar 100 Posts

    I need to do a Spark Plug change on my 6.0 soon and was thinking of using Denso Iridium Plugs(Part#5325). I was wondering if anyone has any feedback about these, and if so, could you please let me know what you think. Thanks
  2. Stealth

    Stealth Epic Member 5+ Years 1000 Posts

    If you search the forums, there is a long thread on spark plugs and which ones are best. Good luck!
  3. shadowt_t

    shadowt_t Epic Member 5+ Years 500 Posts

    Denso are geart
  4. vncj96

    vncj96 Epic Member 5+ Years 1000 Posts

    never heard of them, but these truck engines can respond badly to plugs other then the OE Delco plugs. if you search enough on this site you will find TONS of threads on this particular issue.
  5. rotaryenginepete

    rotaryenginepete Rockstar ROTM Winner 100 Posts

    look into Pulstar Plugs. I'm running them and they are great!!
  6. Pats1pab1

    Pats1pab1 Rockstar 4 Years 500 Posts

    Had a buddy reccomend them and I put Denso Iridium's in my dads 96 truck 4.3l v6 and my brothers Jeep 2.5l 4cyl, last summer when I did their tune ups. The truck idels a lot lower than it use to, plus they say the fuel mileage has improved. My brother said his jeep runs better and hasn't had mis firing problems like it use to. I'm putting them in my truck this summer.

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