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

Part No. 3297 Warranty Details  

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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 28 reviews)

Ratings Distribution

  • 5 Stars

     

    (26)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

96%

of respondents would recommend this to a friend.

Pros

  • Easy to install (16)
  • Improves engine efficiency (14)
  • Durable (10)
  • Increases power (6)

Cons

No Cons

Best Uses

  • Everyday driving (19)
  • Replacement (16)
  • Performance driving (3)
    • Car & Truck:
    • Casual driver (4), Auto enthusiast (3)
    • Reviewer Profile:
    • Casual driver (10), Auto enthusiast (6), Mechanic (3)

Reviewed by 28 customers

Displaying reviews 1-10

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5.0

Would but again!

By 

from BR

Verified Buyer

Comments about Denso SK20R11 Iridium Long Life Spark Plug:

Every day usage

Comment on this reviewHelp Icon(earn points)

 
5.0

Fantastic!

By 

from Stockbridge, GA

About Me Casual Driver

Verified Buyer

Pros

  • Improves Engine Efficiency
  • Increases Power

Cons

  • Difficult To Install

Best Uses

  • Everyday Driving
  • Replacement

Comments about Denso SK20R11 Iridium Long Life Spark Plug:

I noticed my car milage is dropping down despite that its hybrid. All spark plugs were replaced and I can tell the difference immediately not only in milage but also in power and engine sound.

Comment on this reviewHelp Icon(earn points)

 
5.0

100k mile spark plugs! crazy.

By 

from North Idaho

About Me Auto Enthusiast

Verified Buyer

Pros

  • Durable

Cons

    Best Uses

    • Everyday Driving

    Comments about Denso SK20R11 Iridium Long Life Spark Plug:

    OEM parts combined with online coupon made it a great deal. My 4.7 4runner is noticeably smoother now ( was past due 133k on stock OEM plugs )

    Comment on this reviewHelp Icon(earn points)

     
    5.0

    Quality with value

    By 

    from Chicago, IL

    Verified Buyer

    Comments about Denso SK20R11 Iridium Long Life Spark Plug:

    Excellent products

    Comment on this reviewHelp Icon(earn points)

     
    5.0

    03 Camry (with one tip)

    By 

    from Chester, VA

    About Me Casual Driver

    Ask me a question

    Level 4

    Pros

    • Easy To Install

    Cons

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about Denso SK20R11 Iridium Long Life Spark Plug:

      Denso SK20R11 is the same OEM for my 03Camry LE.
      I changed it 105K miles. I had issue with slow start the issue was connected with the battery not the spark plugs. But I went ahead and changed it since it been on for almost 144 months. 144 months or 120Kmile is the recommended replacement for 03 Camry.
      TIP: I ran into one installation problem, and I found a solution
      Problem: Sparkplug socket got stuck when I put the new one in.
      Solution: Duck tape Sparkplug socket and socket extension this helped to pull the socket out once the new one is in tight.
      Good Luck!

      Comment on this reviewHelp Icon(earn points)

       
      5.0

      just what I ordered

      By 

      from Goshen Oio

      About Me Casual Driver

      Ask me a question

      Verified Buyer
      Level 3

      Pros

      • Durable
      • Easy To Install
      • Improves Engine Efficiency

      Cons

        Best Uses

        • Everyday Driving

        Comments about Denso SK20R11 Iridium Long Life Spark Plug:

        All is good

        Comment on this reviewHelp Icon(earn points)

         
        5.0

        Good product

        By 

        from Johnstown,PA.

        About Me Casual Driver

        Verified Buyer
        Level 1

        Pros

        • Easy To Install
        • Improves Engine Efficiency

        Cons

          Best Uses

          • Everyday Driving
          • Replacement

          Comments about Denso SK20R11 Iridium Long Life Spark Plug:

          Good product working very well

          Comment on this reviewHelp Icon(earn points)

           
          5.0

          worth the money

          By 

          from Crystal Lake, IL

          About Me Auto Enthusiast, Mechanic

          Ask me a question

          Level 8

          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 reviewHelp Icon(earn points)

             
            5.0

            So far so good!

            By 

            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.

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              5.0

              Stock Replacement

              By 

              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.

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                Displaying reviews 1-10

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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. For further assistance, please review your support options on our Contact Us page.

                4 Questions | 4 Answers
                Displaying questions 1-4
                • Q:

                  what is the manufactures gap setting for this plug that is for a 2002 ES300 Lexus with 3.0 eng.?
                  Asked on 3/7/2015 by Franklin70 from Madisonville, ky

                  1 answer

                  • CUSTOMER CARE

                    A:

                    Hi Franklin70, I'm glad to assist you! This Denso SK20R11 Iridium Long Life Spark Plug - Part No. 3297 is pre-gaped at 0.044 inch from the factory and it is an exact fit for your 2002 Lexus ES300, the fact remains that the gap must be adjusted for the vehicle that the spark plug is intended for.

                    Answered on 3/7/2015 by Solomon
                • 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 1-4

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