Iridium IX Spark Plug (DCPR7EIX)
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NGK Iridium IX Spark Plug (DCPR7EIX)

Part No. 6046 Warranty Details  

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Laser-welded iridium center electrode is resistant to heat, corrosion and electrical wear. The tapered ground electrode minimizes quenching. Provides outstanding acceleration, high fuel efficiency and durability.

Product Features:
  • 0.6 mm iridium-tip center electrode provides durability and a high melting point
  • Taper-cut ground electrode shape provides improved flame reproduction
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Center Electrode Core Material:Copper Core
Center Electrode Tip Material:Iridium
Electrode Core Material:Iridium
Electrode Tip Material:Iridium
Gap Size:0.032 in
Ground Configuration:Standard
Ground Electrode Core Material:Nickel Core
Ground Electrode Quantity:1
Ground Electrode Tip Design:Taper Cut
Ground Strap Quantity:1
Hex Size:5/8
Manufacturer Heat Range:7
Reach:19 mm
Resistor:Yes
Seat Type:Gasket
Shorty Spark Plug:No
Thread Diameter:12 mm
Tip Configuration:Solid
Type:Iridium IX
Wrench Diameter:5/8 in

REVIEW SNAPSHOT®

by PowerReviews
NGKIridium IX Spark Plug (DCPR7EIX)
 
4.8

(based on 13 reviews)

Ratings Distribution

  • 5 Stars

     

    (11)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

92%

of respondents would recommend this to a friend.

Pros

  • Improves engine efficiency (8)
  • Easy to install (7)
  • Increases power (7)

Cons

No Cons

Best Uses

  • Replacement (6)
  • Performance driving (5)
  • Everyday driving (4)

Most Liked Positive Review

 

Best plug ever !!

I own a 2004 FXDWG and these are the BEST plugs I have ever run in her...quicker throttle response and more horsepower :)

I own a 2004 FXDWG and these are the BEST plugs I have ever run in her...quicker throttle response and more horsepower :)

VS

Most Liked Negative Review

 

Used on my Harley

NGK said the DCPR7EIX was the one to use in my 2005 TwinCam Harley. I was using the DCPR8EIX before. The bike is now harder to start. Might have to change back. Will...Read complete review

NGK said the DCPR7EIX was the one to use in my 2005 TwinCam Harley. I was using the DCPR8EIX before. The bike is now harder to start. Might have to change back. Will be reading the plugs after a week of riding to work.

My compression is not stock and is at 10 to 1.
Cam is a HQ-0034G

Reviewed by 13 customers

Displaying reviews 1-10

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5.0

Quality replacement part

By 

from Southern MD

Verified Buyer

Pros

  • Exact fit for manufacturer's part

Cons

    Best Uses

    • '03 HD 103 Screaming Eagle engine

    Comments about NGK Iridium IX Spark Plug (DCPR7EIX):

    Used to replace manufacturer's part. Worked perfectly.

    • Was this a gift?:
    • No
     
    5.0

    long lasting

    By 

    from franklin,pa

    Verified Buyer

    Pros

    • Last Long Time

    Cons

      Best Uses

      • Works Great In My Harley

      Comments about NGK Iridium IX Spark Plug (DCPR7EIX):

      this plug works longer and better then the Harley spark plug

      • Was this a gift?:
      • No
       
      5.0

      Great plug For Harley Davidson XR1200

      By 

      from Keybiscayne Fl

      About Me Auto Enthusiast, Competitive Driver, Truck Enthusiast

      Verified Buyer

      Pros

      • Better Than Oem
      • Easy To Install
      • Improves Engine Efficiency
      • Increases Power
      • Lightweight

      Cons

        Best Uses

        • Driving Hard
        • Racing

        Comments about NGK Iridium IX Spark Plug (DCPR7EIX):

        Bought these for my Harley XR1200 after 2 yrs and with regular plugs and my bike woke up!!

         
        5.0

        2004 Electra Glide

        By 

        from Clearwater Florida

        About Me Mechanic

        Verified Buyer

        Pros

        • Easy To Install
        • Improves Engine Efficiency
        • Increases Power

        Cons

          Best Uses

          • Everyday Driving
          • Performance Driving
          • Replacement

          Comments about NGK Iridium IX Spark Plug (DCPR7EIX):

          I just installed these so i only have ridden a few days on them. I can notice a performance increase, i would assume a fuel economy increase as well. Bike runs good, no check engine light, would recommend over stock plug!

           
          5.0

          I would buy this product again

          By 

          from Mountain City, TN

          Verified Buyer

          Comments about NGK Iridium IX Spark Plug (DCPR7EIX):

          Best plugs I've found for my motorcycle.

           
          5.0

          Great plug

          By 

          from Ft wayne in

          Verified Buyer

          Comments about NGK Iridium IX Spark Plug (DCPR7EIX):

          Improves power and starting

          (2 of 2 customers found this review helpful)

           
          5.0

          Best plug ever !!

          By 

          from Waycross Ga

          See all my reviews

          Ask me a question

          Verified Buyer
          3 or more reviews submitted

          Pros

          • Easy To Install
          • Improves Engine Efficiency
          • Increases Power

          Cons

            Best Uses

            • Performance Driving
            • Racing

            Comments about NGK Iridium IX Spark Plug (DCPR7EIX):

            I own a 2004 FXDWG and these are the BEST plugs I have ever run in her...quicker throttle response and more horsepower :)

            (1 of 1 customers found this review helpful)

             
            5.0

            Better than copper

            By 

            from Mass

            Verified Buyer

            Pros

            • Durable
            • Easy To Install
            • Improves Engine Efficiency
            • Increases Power

            Cons

              Best Uses

              • Everyday Driving
              • Performance Driving
              • Replacement

              Comments about NGK Iridium IX Spark Plug (DCPR7EIX):

              Smoothed out the rough engine idle. Will last much longer that copper plugs

              (2 of 2 customers found this review helpful)

               
              4.0

              NGK For Harley Davidson

              By 

              from Murfreesboro, Tennessee

              About Me Motorcycle Enthusiast

              Verified Buyer

              Pros

              • Improves Engine Efficiency
              • Increases Power

              Cons

                Best Uses

                • Performance Driving
                • Replacement

                Comments about NGK Iridium IX Spark Plug (DCPR7EIX):

                NGK Sparkplug's with their iridium tips, seem to provide better fuel mileage for my Harley-Davidson motorcycle. Also have a possible one-three horsepower increase. NGK's seem to last longer and can burn through the fuel mixture better.

                (1 of 2 customers found this review helpful)

                 
                5.0

                GR8 Value

                By 

                from York,Pa.

                About Me Motorcyclist

                Verified Buyer

                Pros

                • Easy To Install
                • Improves Engine Efficiency
                • Increases Power
                • Quicker Throttle Response

                Cons

                  Best Uses

                  • Replacement

                  Comments about NGK Iridium IX Spark Plug (DCPR7EIX):

                  We use this product in all Harleys for added HP and better MPG.

                  Displaying reviews 1-10

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                  Do you have questions about this product?

                   

                  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.

                  5 Questions | 5 Answers
                  Displaying questions 1-5
                  • Q:

                    IS THE PRICE FOR 1 OR MULTIPLE?
                    Asked on 2/13/2016 by Michael from United States

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Hi Michael, good question! This NGK Iridium IX Spark Plug (DCPR7EIX) - Part No. 6046 is sold individually.

                      Answered on 2/14/2016 by Solomon from AAP
                  • Q:

                    will these plugs work with the 2013 ion knock sensing
                    Asked on 9/8/2014 by bouty from ct

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Hi Bouty, thank you for contacting us! Please provide your vehicle's year, make, model and engine size so I can assist you further.

                      Answered on 9/9/2014 by Vincent from AAP
                  • Q:

                    what about Harley's anti knock with their spark plugs? Does your plugs allow this feature to work?
                    Asked on 11/4/2013 by zeke from Florida

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Hi Zeke, my answer to your question on the NGK Iridium IX Spark Plug (DCPR7EIX) -part# 6046 is that 2005 and later Harley-Davidson EFI systems incorporate an "Anti-knock" feature that operates by reading the current resistance through the spark plugs. The use of any other spark plug other than 'Stock' plugs disables the anti-knock feature. I would recommend using the stock plugs for best results and to ensure the ion knock retard works properly.

                      Answered on 11/5/2013 by Vincent from AAP
                  • Q:

                    what is the power raiting on the plug? how many watts?
                    Asked on 6/15/2013 by ray from farmland colo

                    1 answer

                    • CUSTOMER CARE

                      A:

                      The NGK Iridium IX Spark Plug (DCPR7EIX) - Part No. 6046 uses an internal circuit that delivers up to 1,000,000 watts of peak power that increases peak spark current by up to 20,000 times that of a traditional spark plug. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                      Answered on 6/17/2013 by John the Car-Doc from AAP
                  • Q:

                    part # for a 5 heat range
                    Asked on 11/13/2011 by Corn69 from Vineland N.J.

                    1 answer

                    • CUSTOMER CARE

                      A:

                      For further assistance, please provide the year, make, model and engine size of the vehicle in question.

                      Answered on 11/13/2011 by Dennis from AAP
                  Displaying questions 1-5

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