Laser Iridium Spark Plug (IZFR6K11)
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Laser Iridium Spark Plug (IZFR6K11)
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NGK Laser Iridium Spark Plug (IZFR6K11)

Part No. 6994 Warranty Details  

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OE-style long-life spark plug; laser-welded iridium center electrode and platinum ground electrode; tapered ground electrode helps minimize quenching; consistent and stable spark; enhanced acceleration; high fuel efficiency and durability.

Product Features:
  • Iridium-tipped center electrode is 6 times harder than platinum
  • Platinum-tipped ground electrode helps ensure great durability and long life
  • Recommended for vehicles using distributorless ignition systems
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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:0.044 in
Ground Configuration:Standard
Ground Electrode Core Material:Nickel Core
Ground Electrode Quantity:1
Ground Electrode Tip Design:Trapezoid
Ground Strap Quantity:1
Hex Size:5/8 in
Manufacturer Heat Range:6
Reach:19 mm
Resistor:Yes
Seat Type:Gasket
Shorty Spark Plug:No
Spark Plug Approximate Resistor Value:5K Ohm
Thread Diameter:14 mm
Tip Configuration:Solid
Type:Iridium/Platinum
Wrench Diameter:5/8 in

REVIEW SNAPSHOT®

by PowerReviews
NGKLaser Iridium Spark Plug (IZFR6K11)
 
4.8

(based on 70 reviews)

Ratings Distribution

  • 5 Stars

     

    (59)

  • 4 Stars

     

    (8)

  • 3 Stars

     

    (3)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to install (48)
  • Improves engine efficiency (42)
  • Durable (36)
  • Increases power (28)
  • Lightweight (9)

Cons

  • No improvement in performance (5)

Best Uses

  • Everyday driving (51)
  • Replacement (39)
  • Performance driving (8)
    • Car & Truck:
    • Casual driver (5), Auto enthusiast (3)
    • Was this a gift?:
    • No (5)
    • Reviewer Profile:
    • Casual driver (35), Auto enthusiast (19), Mechanic (4)

Most Liked Positive Review

 

excellent plugs....use anti seize?

I installed these on my 2003 Honda Accord Coupe, 4 cylinder. These are the same plugs that were installed at the factory (I checked). I wanted to do a review because there...Read complete review

I installed these on my 2003 Honda Accord Coupe, 4 cylinder. These are the same plugs that were installed at the factory (I checked). I wanted to do a review because there is some question as to whether or not to use anti-seize compound on ngk plugs. The Haynes repair manual for the accords says to apply anti seize. NGK says not to apply anti-seize because it may cause you to overtighten the plugs, resulting in stripping the aluminum threads in the engine block. NGK also says they have already applied anti corrosion to the plugs. I used anti-seize because I didn't see the NGK notice about this until after I installed the plugs. I torqued the plugs in to 13 ft/lbs of torque. The car runs great, a noticeable improvement. If I were to do it all over, I would not use anti-seize as the 9 year old plugs came out easily so evidently it's not needed, but I think you're ok if you do use it. These are excellent plugs. Dealer will charge you $150 for a tune up ($22.50 per plug + labor. Do it yourself and save $120. It's an easy tune up.

VS

Most Liked Negative Review

 

Be very carefull when you install these plugs

These NGK plugs are original OEM for my Acura which has an aluminum engine block. I installed new NGK plugs at 97k without putting anti-seize compound on the threads. This is how NGK instructs...Read complete review

These NGK plugs are original OEM for my Acura which has an aluminum engine block. I installed new NGK plugs at 97k without putting anti-seize compound on the threads. This is how NGK instructs you to install their plugs because there is plating on the threads that breaks loose and makes removing them much easier. NGK tells you not to use anti-seize because it makes the plug go into the block much smoother which confuses the really dumb mechanics so then they over tighten and break the plugs. Also, NGK doesn't want the gobs of anti-seize compound that the dumb mechanic puts all over the threads to ooze onto the firing tip of the plug. If you follow the instructions from NGK when dealing with an aluminum block, then you are doomed to spend 2-3 days with a can of penetrating oil, trying to remove their plugs after 60k. ALL MY PLUGS WERE FROZEN IN THE ALUMINUM ENGINE BLOCK. My advice to you is to learn how to properly apply anti-seize to the threads on the spark plug. And finally, NGK will tell you to warm up an aluminum engine block to make removing their plugs easier. This is a bad idea unless you want the block threads to come out with the plugs which will force you to buy new cylinder heads. Other than that, I have no problems with the spark plug itself.

Reviewed by 70 customers

Displaying reviews 1-10

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3.0

Be very carefull when you install these plugs

By 

from Chapel Hill, NC

See all my reviews

Verified Reviewer

Comments about NGK Laser Iridium Spark Plug (IZFR6K11):

These NGK plugs are original OEM for my Acura which has an aluminum engine block. I installed new NGK plugs at 97k without putting anti-seize compound on the threads. This is how NGK instructs you to install their plugs because there is plating on the threads that breaks loose and makes removing them much easier. NGK tells you not to use anti-seize because it makes the plug go into the block much smoother which confuses the really dumb mechanics so then they over tighten and break the plugs. Also, NGK doesn't want the gobs of anti-seize compound that the dumb mechanic puts all over the threads to ooze onto the firing tip of the plug. If you follow the instructions from NGK when dealing with an aluminum block, then you are doomed to spend 2-3 days with a can of penetrating oil, trying to remove their plugs after 60k. ALL MY PLUGS WERE FROZEN IN THE ALUMINUM ENGINE BLOCK. My advice to you is to learn how to properly apply anti-seize to the threads on the spark plug. And finally, NGK will tell you to warm up an aluminum engine block to make removing their plugs easier. This is a bad idea unless you want the block threads to come out with the plugs which will force you to buy new cylinder heads. Other than that, I have no problems with the spark plug itself.

  • Was this a gift?:
  • No
 
5.0

Long lasting, quality plug

By 

from NJ

See all my reviews

Verified Buyer

Comments about NGK Laser Iridium Spark Plug (IZFR6K11):

Replaced a set of the same plugs. Old ones still looked good with 80,000 miles

  • Was this a gift?:
  • No
 
5.0

Great plugs

By 

from Pace, FL

Verified Buyer

Comments about NGK Laser Iridium Spark Plug (IZFR6K11):

OEM plugs on my wife's 04 CRV. Car has 98000 miles and wasn't running smooth anymore. I replaced the plugs with these plugs (exactly the same), and engine runs smooth again.

  • Was this a gift?:
  • No
 
5.0

New spark to my old Honda

By 

from Houston

Verified Buyer

Pros

  • Perfect Oem Replacement

Cons

    Best Uses

    • Great Fit In My 05 Accord

    Comments about NGK Laser Iridium Spark Plug (IZFR6K11):

    Changed plugs in my 05 Accord after 110,000 miles. Since these were OEM replacements, they were a perfect match for my car. My car is running great again.

    • Was this a gift?:
    • No
     
    5.0

    OE Spark plug for Honda accord 2005 EX

    By 

    from Parlin, NJ

    See all my reviews

    Verified Buyer

    Comments about NGK Laser Iridium Spark Plug (IZFR6K11):

    OE Spark plug for Honda accord 2005 EX, good performance.

    • Was this a gift?:
    • No
     
    5.0

    Very satisfied with the product and services

    By 

    from Norwalk, CT

    Verified Buyer

    Comments about NGK Laser Iridium Spark Plug (IZFR6K11):

    Well I am a customer of advanced auto parts for a long time, know I have more interesting of shopping from advance because my business partners with advanced when I purchased with advanced autoparts.com . I make 4% cash back and I get 4% points that I can helh me a residual check . It's a double dipping win win win

     
    4.0

    Good

    By 

    from Naples fl

    Verified Buyer

    Comments about NGK Laser Iridium Spark Plug (IZFR6K11):

    Good

     
    5.0

    Perfect

    By 

    from Bensalem, PA

    About Me Auto Enthusiast

    Verified Buyer

    Pros

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

    Cons

      Best Uses

      • Everyday Driving
      • Replacement

      Comments about NGK Laser Iridium Spark Plug (IZFR6K11):

      great, love that they are pregapped and ready for installation

       
      5.0

      Pretty good for the price

      By 

      from Rockville, md

      About Me Auto Enthusiast

      Verified Buyer

      Pros

      • Increases Power

      Cons

        Best Uses

        • Everyday Driving

        Comments about NGK Laser Iridium Spark Plug (IZFR6K11):

        My mechanic installed these in a 2004 Acura rsx. Engines sounds and run great. More power.

         
        5.0

        great boost

        By 

        from sugar land,TX

        About Me Casual Driver

        See all my reviews

        3 or more reviews submitted

        Pros

        • Easy To Install
        • Increases Power

        Cons

          Best Uses

          • Everyday Driving
          • Replacement

          Comments about NGK Laser Iridium Spark Plug (IZFR6K11):

          I used those plugs to replace my 2006 4 cylinder accord at 90k, even though the menu said 105k since the car is almost 10yr old. The installation process is very smooth. after replacing the plug, I immediately feel the different on the acceleration. overtime I did not feel any gas mileage improvements. for the price and the durability of those plugs, it is great value when compare to how much you have to pay for at the dealership for same or worse plugs. I will definitely buy those again when I need to replace more plugs.

          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.

          6 Questions | 8 Answers
          Displaying questions 1-6
          • Q:

            what is the torque spec for a 2005 honda accord v6?
            Asked on 1/28/2017 by Gello from Madison, wi

            1 answer

            • CUSTOMER CARE

              A:

              Happy to help, Gello! The torque specification of this NGK Laser Iridium Spark Plug - Part No. 6994 is 18-25.3 lb. ft. with cast iron and 18-21.6 lb. ft. with aluminium.

              Answered on 1/30/2017 by Solomon from AAP
          • Q:

            WHAT IS THE TOURQE SPEC ON A HONDA ELEMENT 4 CYL.
            Asked on 5/9/2015 by NONE from ROME,GA

            1 answer

          • Q:

            size of socket needed
            Asked on 3/25/2015 by none from Franklin, NC

            1 answer

            • CUSTOMER CARE

              A:

              I'm glad to answer you! You'll need 5/8 inch socket for this NGK Laser Iridium Spark Plug (IZFR6K11) - Part No. 6994.

              Answered on 3/26/2015 by Solomon
          • Q:

            What is the spark plug gap on the plugs?
            Asked on 7/15/2012 by Goody from Balt. MD

            1 answer

            • CUSTOMER CARE

              A:

              The Gap size on this part NGK Laser Iridium Spark Plug (IZFR6K11), Part No. 6994 is 1.1 mm.
              For compatibility of this part with your vehicle, please provide your vehicle make, model and engine specification.
              For any further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and our representatives would be more than happy to assist you.

              Answered on 7/15/2012 by Aaron from AAP
          • Q:

            Do these come 4 per pack or do I need to buy 4 individual ones?
            Asked on 3/26/2012 by Anonymous

            2 answers

            • CUSTOMER CARE

              A:

              This NGK Laser Iridium Spark Plug (Part No. 6994) is sold individually.

              Answered on 3/26/2012 by Dennis from AAP
            • A:

              there sold in packs of 6

              Answered on 11/3/2014 by richy from katy, tx
          • Q:

            do these plugs need to be gapped or are they pre-gapped?
            Asked on 2/19/2012 by rabon888 from rutherfordton nc

            2 answers

            • CUSTOMER CARE

              A:

              Yes, this NGK Laser Iridium Spark Plug with part#  6994 should come pre-gapped at 0.044".

              Answered on 2/20/2012 by Vincent from AAP
            • A:

              Plugs are pregapped

              Answered on 2/7/2013 by Cozmo from Fairmont WV
          Displaying questions 1-6

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