SK20R11 Iridium Long Life Spark Plug
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Denso SK20R11 Iridium Long Life Spark Plug

Part No. 3297 Warranty  

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This long-life spark plug features a special iridium alloy (90% Ir) and a platinum ground strap.
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Electrode Core Material:Copper
Electrode Tip Material:0.7mm Iridium
Ground Strap Quantity:1
Insulator Type:Purified Alumina
Manufacturer Heat Range:20
Resistor:Yes
Spark Plug Reach:3/4 in
Spark Plug Seat Type:Gasket
Spark Plug Thread Size:14 mm
Tip Configuration:0.7mm Iridium
Type:Iridium Long Life
Wrench Diameter:5/8 in

REVIEW SNAPSHOT®

by PowerReviews
DensoSK20R11 Iridium Long Life Spark Plug
 
4.9

(based on 21 reviews)

Ratings Distribution

  • 5 Stars

     

    (19)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

95%

of respondents would recommend this to a friend.

Pros

  • Easy to install (13)
  • Improves engine efficiency (11)
  • Durable (8)
  • Increases power (5)

Cons

    Best Uses

    • Everyday driving (14)
    • Replacement (13)
    • Performance driving (3)
      • Car & Truck:
      • Casual driver (4), Auto enthusiast (3)
      • Reviewer Profile:
      • Casual driver (6), Auto enthusiast (5), Mechanic (3)

    Reviewed by 21 customers

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    Displaying reviews 1-10

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    5.0

    worth the money

    By John

    from Crystal Lake, IL

    About Me Auto Enthusiast, Mechanic

    Ask me a question

    Level 6

    Pros

    • Easy To Install
    • Improves Engine Efficiency
    • Increases Power

    Cons

      Best Uses

      • Everyday Driving
      • Performance Driving
      • Replacement

      Comments about Denso SK20R11 Iridium Long Life Spark Plug:

      Always buy OEM spark plugs. These are OEM for a. Lexus LS430 and worked great. Don't skimp buying cheaper plugs and don't waste your money buying so called better plugs. Buy what your car had in it from the factory

      Comment on this review(earn points)

       
      5.0

      So far so good!

      By Computer Bob

      from Johnstown, PA

      About Me Mechanic

      Verified Buyer
      Level 3

      Pros

      • Improves Engine Efficiency

      Cons

        Best Uses

        • Everyday Driving

        Comments about Denso SK20R11 Iridium Long Life Spark Plug:

        Replaced after repairing sludge problem in valve covers at 116K. Old plugs were platinum, other brand and not the OEM so they were replaced somewhere along the way. The old plugs had heavy deposits on 2 plugs as a result of the sludge problem.
        Mileage increased appreciably after replacing with this brand.

        Comment on this review(earn points)

         
        5.0

        Stock Replacement

        By Cub126re

        from Torrington, CT

        About Me Casual Driver

        Verified Buyer
        Level 1

        Pros

        • Durable
        • Easy To Install

        Cons

          Best Uses

          • Replacement

          Comments about Denso SK20R11 Iridium Long Life Spark Plug:

          Stock replacement for original plugs in a 07 Scion TC. I changed plugs at 100K miles, book says to replace at 125K. The original plugs were in good shape, I could have waited a little longer to replace. Great plugs, long lasting.

          Comment on this review(earn points)

           
          4.0

          Same OEM for my 2009 Camry

          By Fred

          from Pa

          About Me Casual Driver

          Verified Buyer
          Level 1

          Pros

          • Easy To Install

          Cons

            Best Uses

            • Replacement

            Comments about Denso SK20R11 Iridium Long Life Spark Plug:

            Saved a lot by doing this my self. The same plugs were used by Toyota for this model and year...2009 Camry.

            Comment on this review(earn points)

            (1 of 1 customers found this review helpful)

             
            5.0

            OEM great spark plugs

            Comments about Denso SK20R11 Iridium Long Life Spark Plug:

            These are the exact spark plugs the car came with when it was brand new. I just replaced after 100,000 miles. Figured it was time. No issues with the old spark plugs other than they've been working for 100k miles.

            On a Toyota Camry, this was a half hour job. Glad to see no need to replace cables any more. Best 1/2 hour spent. Very easy job.

            Work great. It sounds like the plugs have even helped with the idle.

            Comment on this review(earn points)

            (2 of 3 customers found this review helpful)

             
            5.0

            Replacement for OEM plugs

            By Austin 01 Dodge Dakota

            from Mobile AL

            About Me Auto Enthusiast, Casual Driver

            Ask me a question

            Verified Buyer
            3 or more reviews submitted

            Pros

            • Comes Pre Gaped For Easy
            • Durable
            • Easy To Install
            • Improves Engine Efficiency

            Cons

              Best Uses

              • Everyday Driving
              • Replacement

              Comments about Denso SK20R11 Iridium Long Life Spark Plug:

              Exact match for my vehicle I removed old plugs after 50k miles .
              Some ware on plugs but was pleasantly surprised with the overall performance good for another 50-75k.

              Comment on this review(earn points)

              (2 of 4 customers found this review helpful)

               
              5.0

              Great product

              By BumbleBee

              from Lincoln, NE

              About Me Casual Driver

              Verified Buyer
              Level 1

              Pros

              • Durable

              Cons

                Best Uses

                • Everyday Driving

                Comments about Denso SK20R11 Iridium Long Life Spark Plug:

                Good plugs

                Comment on this review(earn points)

                (3 of 5 customers found this review helpful)

                 
                5.0

                They're spark plugs...

                By ILikePlugs

                from Denver

                About Me Auto Enthusiast, Competitive Driver, Truck Enthusiast

                Verified Buyer
                Helpful Reviewer

                Pros

                • Easy To Install
                • Improves Engine Efficiency

                Cons

                  Best Uses

                  • Everyday Driving
                  • Replacement

                  Comments about Denso SK20R11 Iridium Long Life Spark Plug:

                  What can I say here? They're spark plugs, replacements for the OEM Iridium plugs in our 4Runner. Unscrew the old ones, screw in the new ones, just be mindful of what you're doing as with any spark plug replacement. They did the job.

                  Comment on this review(earn points)

                  (3 of 5 customers found this review helpful)

                   
                  5.0

                  OEM Correct

                  By Dan

                  from Louisiana

                  About Me Auto Enthusiast

                  Verified Buyer
                  Helpful Reviewer

                  Pros

                  • LONG LASTING

                  Cons

                  • none

                  Best Uses

                  • Replacement

                  Comments about Denso SK20R11 Iridium Long Life Spark Plug:

                  These plugs are the original plug used by Toyota when new. Originals lasted 90,000 + miles. Replaced with Bosch which lasted only 40,000 miles before the Iridium tip disappeared. Hope to get 90,000 out of these.

                  Comment on this review(earn points)

                  (2 of 4 customers found this review helpful)

                   
                  5.0

                  Restored original performance

                  By Puffnstuff

                  from Jacksonville, FL

                  About Me DIY, Truck Enthusiast

                  Verified Buyer
                  Level 2

                  Pros

                  • Easy To Install
                  • Improves Engine Efficiency

                  Cons

                    Best Uses

                    • Everyday Driving
                    • Replacement

                    Comments about Denso SK20R11 Iridium Long Life Spark Plug:

                    I replaced my original plugs which only had 60k on them. They were ngk long life iridium plugs installed by the factory. Let me tell you that with an electrode of only 1.1mm wear becomes noticable which is why I replaced mine. I don't know how they determine lifespan but there was no way they were going to make it to 100k. Anyway installed the denso's and my performance returned to normal. Remember to use anti-sieze on your threads when you install new plugs especially when dealing with dissimilar metsls.

                    Comment on this review(earn points)

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                    Do you have questions about this product?(earn points for answers!)

                     

                    Ask a question, get answers from real customers and in-house experts. Or contact Customer Care by email or call 1-877-238-2623.

                    3 Questions | 3 Answers
                    Displaying questions 1-3
                    • Q:

                      Since this plug is pre-gapped is it just a removal of the old plug and replacement with the new plug. No other gapping or preparation needs to be done?

                      Rob
                      Asked on 3/11/2013 by Rob

                      1 answer

                      • CUSTOMER CARE

                        A:

                        This Denso SK20R11 Iridium Long Life Spark Plug -part# 3297 is vehicle specific. For assisting you further, please provide the year, make, model and engine size of the vehicle. You may also call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                        Answered on 3/11/2013 by Vincent from AAP
                    • Q:

                      My manual says to use 0.043 gap. Do these still work even though there is a tiny difference with it being 0.044?
                      Asked on 8/28/2012 by J from Austin, TX

                      1 answer

                      • CUSTOMER CARE

                        A:

                        We will need more information including the year, make, model, and engine size of your vehicle before we can make a suggestion. Please call us at 1-877-ADVANCE (238-2623) or visit your nearest Advance Auto Parts store and we would be more than
                        happy to further assist you.

                        Answered on 8/29/2012 by Rick from AAP
                    • Q:

                      Are these spark plugs factory gapped?
                      Asked on 8/15/2012 by Ravi from Dublin

                      1 answer

                      • CUSTOMER CARE

                        A:

                        This Denso SK20R11 Iridium Long Life Spark Plug (Part# 3297) is pre-gapped and it is having spark plug gap of 0.044". For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

                        Answered on 8/16/2012 by Rick from AAP
                    Displaying questions 1-3

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