Laser Iridium Spark Plug (IFR5J11)
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Laser Iridium Spark Plug (IFR5J11)
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NGK Laser Iridium Spark Plug (IFR5J11)

Part No. 7418 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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Electrode Core Material:Iridium
Electrode Tip Material:Iridium
Ground Strap Quantity:1
Manufacturer Heat Range:5
Shorty Spark Plug:No
Spark Plug Reach:3/4 in
Spark Plug Seat Type:gasket
Spark Plug Thread Size:14 mm
Tip Configuration:Solid
Wrench Diameter:5/8 in


by PowerReviews
NGKLaser Iridium Spark Plug (IFR5J11)

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

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These are very good plugs.


from bristol, VA

About Me Auto Enthusiast, Casual Driver

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Helpful Reviewer


  • Durable
  • Improves Engine Efficiency
  • Increases Power


    Best Uses

    • Everyday Driving
    • Replacement
    • Restoration

    Comments about NGK Laser Iridium Spark Plug (IFR5J11):

    These came as OE on my 2008 Suzuki SX4. Had 105,500 miles when I replaced them. They showed 2thousandths of gap burn. They were still working good, and no loss of gas mileage. So I went back with OE.

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