Laser Iridium Spark Plug (IZFR5K11)
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Laser Iridium Spark Plug (IZFR5K11) Laser Iridium Spark Plug (IZFR5K11) Laser Iridium Spark Plug (IZFR5K11)
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NGK Laser Iridium Spark Plug (IZFR5K11)

Part No. 3657 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:5
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 (IZFR5K11)
 
4.7

(based on 19 reviews)

Ratings Distribution

  • 5 Stars

     

    (14)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Durable (7)
  • Improves engine efficiency (7)
  • Easy to install (6)
  • Increases power (6)

Cons

No Cons

Best Uses

  • Everyday driving (9)
  • Replacement (6)
    • Car & Truck:
    • Auto enthusiast (3), Casual driver (3)
    • Was this a gift?:
    • No (5)
    • Reviewer Profile:
    • Casual driver (5)

Most Liked Positive Review

 

Money well spent

I replaced 3 of these OEM Iridium plugs with 3 NGK cheaper platinum plugs about 3.5 years ago and left other 3 OEM Iridium plugs on my wife's van. I recently replaced all 6...Read complete review

I replaced 3 of these OEM Iridium plugs with 3 NGK cheaper platinum plugs about 3.5 years ago and left other 3 OEM Iridium plugs on my wife's van. I recently replaced all 6 plugs (3 OEM Iridium plugs with 100K+ and the 3 newer installed platinum plugs wtih about 50K miles). I included a picture for comparison. The platinum plug on the left with 50K miles is darker, dirtier than the OEM Iridium plug at right with 100K+ miles. They were pulled from my wife's Honday Odyssey van.

VS

Most Liked Negative Review

 

I would buy this product again.

Brought to replace old spark plugs in a Saturn Vue.
Nothing special about the spark plugs.

Brought to replace old spark plugs in a Saturn Vue.
Nothing special about the spark plugs.

Reviewed by 19 customers

Displaying reviews 1-10

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5.0

Online order. Picked up at store. Seamless service.

By 

from Clarence NY

Verified Buyer

Pros

    Cons

      Best Uses

      • Honda Pilot

      Comments about NGK Laser Iridium Spark Plug (IZFR5K11):

      Use Advance all the time.

      • Was this a gift?:
      • No
       
      4.0

      Fast & Quick Service!

      By 

      from Chula Vista

      Verified Buyer

      Comments about NGK Laser Iridium Spark Plug (IZFR5K11):

      Great service!

      • Was this a gift?:
      • No
       
      5.0

      Great plug for Honda engine.

      By 

      from Vinton, VA

      Verified Buyer

      Pros

      • Faster starts, better idle and throttle response

      Cons

      • A little pricey, not bad when you get 25% off.

      Best Uses

        Comments about NGK Laser Iridium Spark Plug (IZFR5K11):

        Seems to be well built and they are doing great in my Honda powered Vue!

        • Was this a gift?:
        • No
         
        4.0

        As advertized.

        By 

        from Augusta Ga

        Verified Buyer

        Comments about NGK Laser Iridium Spark Plug (IZFR5K11):

        goes in my 07 Odyessey. Right part for the vehicle. My surprise was while in Florida on vacation I was going to change out my plugs. The local stores didnot carry the proper plug, but wanted to give me a different number plug. This forced me to wait until returning home to get and replace them. Just odd. Most reviews claimed their plugs were properly gapped when they bought the. Mine were not. Therefore only a 4 star rating.

        • Was this a gift?:
        • No
         
        5.0

        Great Quality Spark Plug

        By 

        from Findlay,Ohio

        Verified Buyer

        Comments about NGK Laser Iridium Spark Plug (IZFR5K11):

        I was very impressed with the Quality build of this Spark Plug. I have found it is always best to go with OEM Parts for replacement..
        Spark Plugs have different heat ranges. So they are somewhat designed for specific engines.

        • Was this a gift?:
        • No
         
        5.0

        OEM parts

        By 

        from Baltimore, MD

        Verified Buyer

        Comments about NGK Laser Iridium Spark Plug (IZFR5K11):

        Good price on the exact OEM plugs for the Honda Pilot

         
        5.0

        Excellent quality, exact OEM type plugs for my Odyssey

        By 

        from Salina, KS

        About Me Casual Driver

        Verified Buyer

        Pros

        • Easy To Install

        Cons

          Best Uses

          • Everyday Driving
          • Replacement

          Comments about NGK Laser Iridium Spark Plug (IZFR5K11):

          These are the exact plug as was stock on my 2007 Honda Odyssey. They were very easy to change, much easier than some of the online tutorials made it look. These plugs are already gapped, so it makes the installation very quick. All I did was put some anti-seize on the threads, and they were good to go. I also put some dielectric grease on the coils (COPs), but that's probably up to you to decide if you need. I torqued these to 18 ft lbs, which was from an NGK online reference page I found. Great plug, and with Advance Autos great pricing and discounts they were very affordable.

           
          4.0

          NGKs work great!

          By 

          from Indiana

          About Me Casual Driver

          Verified Buyer

          Pros

          • Durable

          Cons

          • Price

          Best Uses

          • Everyday Driving
          • Replacement

          Comments about NGK Laser Iridium Spark Plug (IZFR5K11):

          Put these in my Honda Pilot. The spark plugs I removed were original and had 120,000 miles with no issues. So I put in the exact same and expect they will work great as well. Would have given them 5 stars, but the price is a bit high for these.

           
          5.0

          I would buy this product again and again

          By 

          from Miramar, FL

          About Me Casual Driver

          Verified Buyer

          Pros

          • Durable
          • Great Replacement Plugs
          • Improves Engine Efficiency
          • Increases Power
          • Lightweight

          Cons

            Best Uses

            • Everyday Driving
            • Replacement

            Comments about NGK Laser Iridium Spark Plug (IZFR5K11):

            Great online service. I try when ever possible to buy the items I need to fix my cars and then go to the store to pick up my order. Saves time and money.

            (3 of 4 customers found this review helpful)

             
            5.0

            Money well spent

            By 

            from Round Lake, Il

            About Me Casual Driver

            See all my reviews

            3 or more reviews submitted

            Pros

            • Durable
            • Easy To Install

            Cons

              Best Uses

              • Everyday Driving

              Comments about NGK Laser Iridium Spark Plug (IZFR5K11):

              I replaced 3 of these OEM Iridium plugs with 3 NGK cheaper platinum plugs about 3.5 years ago and left other 3 OEM Iridium plugs on my wife's van. I recently replaced all 6 plugs (3 OEM Iridium plugs with 100K+ and the 3 newer installed platinum plugs wtih about 50K miles). I included a picture for comparison. The platinum plug on the left with 50K miles is darker, dirtier than the OEM Iridium plug at right with 100K+ miles. They were pulled from my wife's Honday Odyssey van.

              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.

              1 Question | 2 Answers
              Displaying question 1
              • Q:

                do i need to set the gap on these or are they pre-set?
                Asked on 3/16/2012 by Anonymous

                2 answers

                • CUSTOMER CARE

                  A:

                  There is no need to set as the NGK Laser Iridium Spark Plug with Part No. 3657 is preset with a gap of 0.044.

                  Answered on 3/17/2012 by John the Car-Doc from AAP
                • A:

                  Always check the gap according to your vehicle. NGK states on their website that the gap should be checked before installation.

                  Answered on 6/7/2013 by anonymous from CA
              Displaying question 1

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