Iridium IX Spark Plug
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Iridium IX Spark Plug Iridium IX Spark Plug Iridium IX Spark Plug
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NGK Iridium IX Spark Plug

Part No. 2669 Warranty  

Fit of this part varies by vehicle & equipment specs Type of Fit

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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Electrode Core Material:Iridium
Electrode Tip Material:Iridium
Ground Strap Quantity:1
Manufacturer Heat Range:9
Resistor:Yes
Shorty Spark Plug:No
Spark Plug Reach:3/4 in
Spark Plug Seat Type:gasket
Spark Plug Thread Size:14 mm
Tip Configuration:Solid
Type:Iridium IX
Wrench Diameter:5/8 in

REVIEW SNAPSHOT®

by PowerReviews
NGKIridium IX Spark Plug
 
4.5

(based on 21 reviews)

Ratings Distribution

  • 5 Stars

     

    (15)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

89%

of respondents would recommend this to a friend.

Pros

  • Improves engine efficiency (16)
  • Increases power (14)
  • Easy to install (13)
  • Durable (9)
  • Lightweight (3)

Cons

    Best Uses

    • Everyday driving (13)
    • Performance driving (11)
    • Replacement (8)
    • Racing (5)
    • Restoration (4)
      • Reviewer Profile:
      • Auto enthusiast (9), Casual driver (6), Mechanic (3)

    Most Liked Positive Review

     

    Mazda 3s - 2.3L N/A - BEST PLUGS!

    Recently replaced the long block assembly on a 2005 Mazda3s Hatchback - this being the 2.3 liter non-turbo. carried over all electronics, ...includings plugs :xUnknowingly cracked spark plug # 4 during the...Read complete review

    Recently replaced the long block assembly on a 2005 Mazda3s Hatchback - this being the 2.3 liter non-turbo. carried over all electronics, ...includings plugs :xUnknowingly cracked spark plug # 4 during the motor swap, causing the car to only run on 3 cylinders.Replaced the plugs with cheap-o BOSCH platinums at $2 and change. And when the sales-teenager girl (at a competing parts store... let's call them [@]) stated that they were pre-gapped (according to her trusty computer), I threw them in the car without even checking.The cylinder misfire in #4 was gone, but now I was getting random misfires... causing excess fuel to blow up in my catalytic converter.. my precious, expensive, need-to-pass-emissions catalytic converter.Did a little research, and well, here's the dillie: Mazda uses IRIDIUM spark plugs from the factory. Nothing else. Mazda also uses NGK SPARK PLUGS from the factory. Nothing else. Mazda specified the SPARK PLUG GAP @ .050. Nothing else.****(This only applies to 2005 - 2009 Mazda3s 2.3L motors. The 2004 Mazda3 2.3L had a different ignition setup).****Anyways, I went out, bought these plugs along with a SPARK PLUG GAP TOOL, RE-GAPPED (they were all at .030, made them .050) and installed these plugs. The car started up immediately. During the delightful 106,990 miles I drove the car before oil-starvation lead to a quite unpleasant rod-knock, the car never started this good.And here's to Advanced Auto Parts being the only place that had these plugs. On a Sunday.Thank you Advanced Auto Parts.Lesson learned: Always check your oil so you don't have to go through what I just did.

    VS

    Most Liked Negative Review

     

    NGK Iridium

    I have a 2003 Nissan Pathfinder LE and I used this kind of plugs. Within 45,000 miles ran the engine produces smoke on the tailpipe. It was a lot of puzzled that arise within...Read complete review

    I have a 2003 Nissan Pathfinder LE and I used this kind of plugs. Within 45,000 miles ran the engine produces smoke on the tailpipe. It was a lot of puzzled that arise within me, considering that the NGK company proclaimed as spark plug world leader!When I let the mechanic changed the plugs they showed it to me, the was in bad shape After, with lot of research, I decided to replaced them and bought the Bosch Iridium. I was convinced with this, due to the bosch video that I watched. It was created in a quality wise. And now I have those in in my engine and I'm fully satisfied, with smooth acceleration, quicker response,improved fuel economy and durability. Finally I would conclude that Bosch Iridium is much better than Ngk Iridium, besides Boch is cheaper than NGK.I'm a happy Bosch Iridium user.

    Reviewed by 21 customers

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    Displaying reviews 1-10

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    (1 of 3 customers found this review helpful)

     
    4.0

    iridium for Honda civic

    By steve

    from alabama

    About Me Casual Driver

    Verified Buyer
    Level 1

    Pros

    • Car Feels More Responsive
    • Easy To Install
    • Improves Engine Efficiency

    Cons

    • Oem Part Number Dif

    Best Uses

    • Everyday Driving

    Comments about NGK Iridium IX Spark Plug:

    seems fine ATM

    Comment on this review(earn points)

    (3 of 4 customers found this review helpful)

     
    5.0

    NGK Iridium IX

    By steve

    from north alabama

    About Me Casual Driver

    Verified Buyer
    3 or more reviews submitted

    Pros

    • Improves Engine Efficiency
    • Increases Power

    Cons

      Best Uses

      • Everyday Driving

      Comments about NGK Iridium IX Spark Plug:

      Really made a big difference in my 07 accord 2.4L, although not the same as the OEM plug I removed (iridium NGK) it worked great and was very noticable. (Note I had 130k miles on oem plugs before I changed).

      Comment on this review(earn points)

      (2 of 9 customers found this review helpful)

       
      1.0

      I will never do a store pickup purchase.

      By Joe Blow

      from Atlanta, GA

      About Me Casual Driver

      Verified Buyer
      Level 1

      Pros

      • Durable
      • Improves Engine Efficiency
      • Increases Power

      Cons

      • Difficult To Install

      Best Uses

      • Performance Driving
      • Replacement
      • Restoration

      Comments about NGK Iridium IX Spark Plug:

      Good product

      Comment on this review(earn points)

      (5 of 9 customers found this review helpful)

       
      5.0

      I would buy them again

      By MSB

      from Ohio

      About Me Auto Enthusiast

      Verified Buyer
      Helpful Reviewer

      Pros

      • Increases Power

      Cons

        Best Uses

        • Everyday Driving
        • Performance Driving

        Comments about NGK Iridium IX Spark Plug:

        Seems like my car is less anemic.

        Comment on this review(earn points)

        (5 of 6 customers found this review helpful)

         
        5.0

        Great for historic Datsuns

        By ccox280z

        from Baltimore, MD

        About Me Auto Enthusiast, Shade tree mechanic

        Verified Buyer
        Helpful Reviewer

        Pros

        • Easy To Install
        • Improves Engine Efficiency
        • Increases Power

        Cons

          Best Uses

          • I Use In My Daily Driver

          Comments about NGK Iridium IX Spark Plug:

          Changed my hard starting 280z to quick starting.
          Big improvement in smoothing the idle too.
          Fuel economy seems to be better but I have only ran through one tank of gas since installation of the plugs. I have never seen such a drastic improvement before I installed these plugs.

          I recommend these plugs for historic Datsuns.

          Comment on this review(earn points)

          (4 of 6 customers found this review helpful)

           
          5.0

          Awesome deal

          By Dan

          from Duncan, SC

          About Me Auto Enthusiast, Mechanic

          Verified Buyer
          Helpful Reviewer

          Pros

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

          Cons

            Best Uses

            • Everyday Driving
            • Performance Driving

            Comments about NGK Iridium IX Spark Plug:

            Best plug on the market

            Comment on this review(earn points)

            (3 of 5 customers found this review helpful)

             
            5.0

            Cleared up my miss

            By ET

            from Houston, TX

            About Me Auto Enthusiast

            Verified Buyer
            Helpful Reviewer

            Pros

            • Improves Engine Efficiency
            • Increases Power

            Cons

              Best Uses

                Comments about NGK Iridium IX Spark Plug:

                Replaced Denso plugs with these and the engine runs great now.

                Comment on this review(earn points)

                (3 of 6 customers found this review helpful)

                 
                5.0

                unrelated issue

                By displeased

                from tn

                About Me Competitive Driver

                Verified Buyer
                Helpful Reviewer

                Pros

                  Cons

                    Best Uses

                      Comments about NGK Iridium IX Spark Plug:

                      Other than sending me the wrong plugs, after I bought them from another company, they work great. I use them on all my racing/driving applications.

                      Comment on this review(earn points)

                      (25 of 41 customers found this review helpful)

                       
                      3.0

                      Sparky plugs

                      By Annie

                      from ohio

                      About Me Auto Enthusiast

                      Verified Buyer
                      Level 2

                      Pros

                      • Improves Engine Efficiency

                      Cons

                        Best Uses

                        • Performance Driving

                        Comments about NGK Iridium IX Spark Plug:

                        Only have 50 or 60 miles on pruduct as

                        I stated the jurry is still out

                        Comment on this review(earn points)

                        (40 of 65 customers found this review helpful)

                         
                        4.0

                        Plug and play

                        By hardy616

                        from GNV, FL

                        Verified Buyer
                        Level 2

                        Pros

                        • Easy To Install

                        Cons

                        • No Improvement In Performance

                        Best Uses

                          Comments about NGK Iridium IX Spark Plug:

                          Be careful. This is a single electrode one. Only after uninstalled my old ones I realized what I need are double electrode ones. If you car uses a waste spark ignition, you'd better go with the double electrode ones. But I'm too lazy to return them back and get new ones. So I just installed them on...

                          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.

                          69 Questions | 73 Answers
                          Displaying questions 1-10Previous | Next »
                          • Q:

                            Will this fit 2010 Mazdaspeed 3??
                            Asked on 8/12/2014 by Mike from Davidsvile, Pa

                            1 answer

                          • Q:

                            Will this fit a 2009 Smart Fortwo?
                            Asked on 7/11/2014 by Korby

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Glad to assist, Korby! This spark plug is universal and does not have any applications associated with it. You would need to match it up to the old spark plug and see if they would work. Also to locate an exact spark plug, please provide your vehicle's sub model and engine specification or spark plug's OE number.

                              Answered on 7/13/2014 by Vincent from AAP
                          • Q:

                            would these fit in 2011 f150 ecoboost 3.5?
                            Asked on 2/27/2014 by al from texas

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Hi Al, glad to help you! This NGK Iridium IX Spark Plug is not an exact fit for your 2011 Ford F-150 Ecoboost 3.5. We have an alternate part - Autolite Iridium Fine Wire Plug, part #XP5363 which is an exact fit for your 2011 Ford F-150 Ecoboost 3.5 vehicle.

                              Answered on 3/3/2014 by Steve from AAP
                          • Q:

                            Please suggest model number for maruti baleno and also its cost
                            Asked on 11/17/2013 by Vijay from Mumbai

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Hi Vijay, great question! For assisting you further on locating the exact spark plug please provide the year of manufacture and engine size of your Suzuki Baleno.

                              Answered on 11/17/2013 by Vincent from AAP
                          • Q:

                            Will these fit a 2009 Acura tsx?
                            Asked on 11/16/2013 by Victor from Portland OR

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Hi Victor, this Iridium IX Spark Plug is universal and not vehicle specific.

                              Answered on 11/17/2013 by Morgan from AAP
                          • Q:

                            Will this plug fit 2010 Honda CRV EX 2.4 and what is the gap?
                            Asked on 10/8/2013 by len from lexington, ky

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Hi Len, this NGK Iridium IX Spark Plug -part# 2669 is universal and not a direct fit for your 2010 Honda CRV EX. Please check the Denso SXU22HCR11S Iridium Long Life (SIP) Spark Plug -part# 3461 which is gapped at 0.044" and is an exact fit for your vehicle. 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 10/8/2013 by Vincent from AAP
                          • Q:

                            Will these spark plugs fit a 2012 Honda civic ex-l 1.8?
                            Asked on 9/12/2013 by Pk from CA

                            1 answer

                            • CUSTOMER CARE

                              A:

                              This NGK Iridium IX Spark Plug - Part No. 2669 is universal and is designed to fit most vehicles, but is not an exact fit for your 2012 Honda Civic EX-L. 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 9/12/2013 by Morgan from AAP
                          • Q:

                            Is this spark plug an "exact fit" for a 2008 Honda Accord EX 4 cylinder? I live in WI.
                            Asked on 8/2/2013 by Spark Plugs

                            1 answer

                            • CUSTOMER CARE

                              A:

                              This NGK Iridium IX Spark Plug - Part No. 2669 is universal and not a direct fit for your 2008 Honda Accord EX. Some modifications may be required for proper installation. All the spark plugs are pre-gapped from the factory, the fact remains that the gap must be adjusted for the vehicle that the spark plug is intended for. 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 8/2/2013 by Morgan from AAP
                          • Q:

                            What is the part # for this plug on a 1995 acura integra gsr direct fit??
                            Asked on 7/2/2013 by gerald

                            1 answer

                            • CUSTOMER CARE

                              A:

                              With reference to your inquiry on the NGK Iridium IX Spark Plug - Part No. 2669, the direct fit Iridium IX Spark Plug for your 1995 Acura Integra GSR were unavailable at online. However, we suggest you to visit your nearest Advance Auto Parts store or call us at 1-877-238-2623 and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                              Answered on 7/2/2013 by Morgan from AAP
                          • Q:

                            Does this fit 1995 acura integra??? And does it need to be gapped??
                            Asked on 7/1/2013 by gerald

                            1 answer

                            • CUSTOMER CARE

                              A:

                              This NGK Iridium IX Spark Plug - Part No. 2669 is universal and not a direct fit for your 1995 Acura Integra. Some modifications may be required for proper installation. All the spark plugs are pre-gapped from the factory, the fact remains that the gap must be adjusted for the vehicle that the spark plug is intended for. 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 7/1/2013 by Morgan from AAP
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