IKH20 Iridium Power Spark Plug
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Denso IKH20 Iridium Power Spark Plug

Part No. 5344 Warranty  

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This spark plug features a small center electrode (0.4 diameter), a tapered tip, a U-groove design and a special iridium alloy (90% Ir) for powerful performance.
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Electrode Core Material:Copper
Electrode Tip Material:0.4mm Iridium
Ground Strap Quantity:1
Insulator Type:Purified Alumina
Manufacturer Heat Range:20
Resistor:Yes
Spark Plug Reach:1.04 in
Spark Plug Seat Type:Gasket
Spark Plug Thread Size:14 mm
Tip Configuration:0.4mm Iridium
Type:Iridium Power
Wrench Diameter:5/8 in

REVIEW SNAPSHOT®

by PowerReviews
DensoIKH20 Iridium Power Spark Plug
 
4.6

(based on 12 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Improves engine efficiency (10)
  • Easy to install (8)
  • Increases power (8)
  • Durable (5)

Cons

    Best Uses

    • Everyday driving (11)
    • Replacement (7)
    • Performance driving (5)
      • Car & Truck:
      • Auto enthusiast (4), Mechanic (3)
      • Reviewer Profile:
      • Casual driver (4)

    Reviewed by 12 customers

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    Displaying reviews 1-10

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    5.0

    Worth the price

    By jimmiejo

    from Central Florida

    About Me Auto Enthusiast, Daily driver

    Ask me a question

    Level 3

    Pros

    • Easy To Install
    • Improves Engine Efficiency

    Cons

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about Denso IKH20 Iridium Power Spark Plug:

      Changed the plugs in my 09 Tacoma Prerunner. Seems to run stronger and haven't noticed pinging on lower octanes.

      Comment on this review(earn points)

       
      5.0

      4 Runner difference

      By KC from the City of Green

      from Greensburg,PA

      About Me Casual Driver

      Verified Buyer
      Level 1

      Pros

      • Easy To Install
      • Improves Engine Efficiency
      • Increases Power

      Cons

        Best Uses

        • Everyday Driving
        • Performance Driving
        • Replacement

        Comments about Denso IKH20 Iridium Power Spark Plug:

        Replaced these plugs on my 04 4Runner at 80,000 miles and it was like someone put new life into the engine. Runs smoother, quicker response, and seems to be getting a bit more mpg.

        Comment on this review(earn points)

        (1 of 2 customers found this review helpful)

         
        5.0

        Great delivery option!!!!

        By Matman98

        from New Orleans, LA.

        About Me Casual Driver, Truck Enthusiast

        Verified Buyer
        Level 1

        Pros

        • Easy To Install
        • Improves Engine Efficiency
        • Increases Power

        Cons

          Best Uses

          • Everyday Driving
          • Replacement

          Comments about Denso IKH20 Iridium Power Spark Plug:

          Excellent product!!!!

          Comment on this review(earn points)

          (1 of 2 customers found this review helpful)

           
          5.0

          Working Perfectly

          By E_Doubleu

          from Southeastern, Connecticut

          About Me Casual Driver

          Ask me a question

          Level 3

          Pros

            Cons

              Best Uses

              • Everyday Driving
              • Replacement

              Comments about Denso IKH20 Iridium Power Spark Plug:

              Bought (6) of these to replace the original plugs in my 2006 Toyota Tacoma 4.0L Prerunner. Original Toyota plugs are (3) NKG and (3) Denso. Not sure why, but that's what it is. I'm not one to chase every finite detail about gaining 1 more mpg with certain plugs, so that info I don't have.
              They are a perfect fit, were easy to install, and have been performing perfectly for 3 months so far.

              Comment on this review(earn points)

              (1 of 2 customers found this review helpful)

               
              4.0

              So far so good

              By rangermike

              from Wilmington, NC

              Verified Buyer
              3 or more reviews submitted

              Pros

              • Improves Engine Efficiency
              • Increases Power

              Cons

                Best Uses

                • Everyday Driving
                • Replacement

                Comments about Denso IKH20 Iridium Power Spark Plug:

                These plugs work great and appear in early use to improve fule efficiency.

                Comment on this review(earn points)

                (1 of 2 customers found this review helpful)

                 
                5.0

                4 runner perfection

                By RaeRae

                from Clarksville, TN

                About Me Auto Enthusiast, Casual Driver, Mechanic

                Verified Buyer
                3 or more reviews submitted

                Pros

                • Durable
                • Easy To Install
                • Improves Engine Efficiency
                • Increases Power
                • Smoothed out rough idle

                Cons

                  Best Uses

                  • Everyday Driving
                  • Performance Driving
                  • Replacement

                  Comments about Denso IKH20 Iridium Power Spark Plug:

                  Put in a set of these and WOW! like a vehicle youth plug, 4 runner I think runs better than it did when new, and MPG's have increased by 2.5 ( went from 16.5 to 19 MPG in the city I can only imagine the HWY

                  Comment on this review(earn points)

                  (1 of 2 customers found this review helpful)

                   
                  4.0

                  Installed on 2006 Honda Civic Hybrid

                  By PaulM.

                  from York, PA

                  Level 1

                  Pros

                  • Easy To Install

                  Cons

                  • No Improvement In Performance

                  Best Uses

                  • Everyday Driving

                  Comments about Denso IKH20 Iridium Power Spark Plug:

                  Nothing special: just replaced the old ones. Civic Hybrid uses 8 plugs. Didn't noticed any performance difference.

                  • Car & Truck:
                  • Casual Driver

                  Comment on this review(earn points)

                  (1 of 2 customers found this review helpful)

                   
                  4.0

                  I don't miss the misfire

                  By oilspot

                  from St. Louis, mo

                  Verified Buyer
                  3 or more reviews submitted

                  Pros

                  • Durable
                  • Improves Engine Efficiency
                  • Increases Power

                  Cons

                    Best Uses

                    • Everyday Driving
                    • Performance Driving
                    • Replacement

                    Comments about Denso IKH20 Iridium Power Spark Plug:

                    I'm hoping this is equivalent to the OEM, which said FOMOCO. However, the application was a Volvo and some message boards said Denso was a good brand for Volvos. We'll see. So far the car runs smoother. The change/upgrade was a bit ahead of the schedule, but cheap insurance for a possible cause of the miss. One plug was a bit black and the rest were all a nice tan. So I am optimistic

                    • Car & Truck:
                    • Auto Enthusiast, Mechanic

                    Comment on this review(earn points)

                    (2 of 4 customers found this review helpful)

                     
                    4.0

                    Great OEM replacement

                    By Jon

                    from Colorado Springs, CO

                    Ask me a question

                    Verified Buyer
                    Level 4

                    Pros

                    • Improves Engine Efficiency
                    • Increases Power

                    Cons

                      Best Uses

                      • Everyday Driving

                      Comments about Denso IKH20 Iridium Power Spark Plug:

                      Great OEM replacement. Had a bit of difficulty replacing on my '07 Tacoma V6 due to placement of certain things in the engine bay. other than that I noticed an improvement on throttle response and +1-2 on my mpg after two full fuel ups.

                      • Car & Truck:
                      • Auto Enthusiast

                      Comment on this review(earn points)

                      (3 of 4 customers found this review helpful)

                       
                      4.0

                      work flawlessly

                      By me

                      from philadelphia, pa

                      Verified Buyer
                      Helpful Reviewer

                      Pros

                      • Durable
                      • Easy To Install
                      • Improves Engine Efficiency

                      Cons

                        Best Uses

                          Comments about Denso IKH20 Iridium Power Spark Plug:

                          Plugs came pregapped to OEM specifications. Installation was a breeze. Thanks.

                          Comment on this review(earn points)

                          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. Or contact Customer Care by email or call 1-877-238-2623.

                          3 Questions | 4 Answers
                          Displaying questions 1-3
                          • Q:

                            The manual for my 2007 BMW 328xi says the gap should be 0.040, but the product displayed has gap @ 0.044. Do I need to adjust the gap before installing or is the difference negligible?
                            Asked on 1/19/2013 by New BMW Project

                            1 answer

                            • CUSTOMER CARE

                              A:

                              This Denso IKH20 Iridium Power Spark Plug - part# 5344 is an exact fit for your 2007 BMW 328xi and the difference is negligible. 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 1/19/2013 by Vincent from AAP
                          • Q:

                            What is the performance differnce in the long life iridium plugs and the standard iridium plugs made by Denso. There is only a 50 cents difference in price so why 2 models. The long life plugs are supposed to be good for 120k but what is the expected life of the standard plugs? Thanks
                            Asked on 12/30/2011 by Anonymous

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Denso long life Iridium plugs maintain the 0.4mm Iridium centre electrode but also have a platinum 'chip' in the ground electrode to allow performance to be maintained for a much longer service life (Sustained spark performance upto 120,000 miles). These plug types are usually recommended for high power turbo charged engines where wear may otherwise be accelerated. While the Denso Iridium standard Spark Plug provides dyno-tested power and efficiency gains for up to 100,000 miles.

                              Answered on 1/4/2012 by John the Car-Doc from AAP
                          • Q:

                            how many spark plugs come in the box?
                            Asked on 3/22/2010 by James from Baltimore, MD

                            2 answers

                            • CUSTOMER CARE

                              A:

                              This is the price per spark plug.

                              Answered on 3/22/2010 by kevin from AAP
                            • VERIFIED BUYER

                              A:

                              4 to a box.

                              Answered on 7/8/2010 by Ryan from Pittsburgh, PA
                          Displaying questions 1-3

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