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NGK Iridium IX Spark Plugs (4) Coldest - Heat Range 9

Pricing: $47.00

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Give your Honda or Acura the right amount of juice with this set of four Iridium IX spark plugs. Engineered to both deliver great performance and outlast your vehicle, NGK Iridium IX is a popular aftermarket performance parts brand of choice among enthusiasts.

NGK Iridium IX spark plugs offer many different benefits, including increased ignitability, improved fuel efficiency, quicker throttle response, and superior anti-fouling.

Key Features

NGK Iridium IX spark plugs are a quality, reliable, and innovative solution to maximizing and enhancing the engine’s performance. NGK designed these spark plugs with durability as their first priority, so they chose to use iridium because it’s six times as durable as platinum and offers an extremely high melting point.  Here are a few features that set NKG Iridium IX spark plugs apart from the rest on the market:

  • Durability ensured by a fine iridium tip
  • Stable spark
  • Laser-welded iridium center electrode
  • Extreme heat resistance
  • Compatibility with high-tech, high-performance engines
  • Tapered ground electrode that improves flame reproduction
  • Trivalent metal plating with anti-corrosion and anti-seizing properties
  • OEM quality
  • Tested to Honda and Acura specifications


  • Part number: #2669
  • Thread size: 14mm
  • Thread reach: 19mm/0.75”
  • Hex size: 5/8”
  • Center electrode core material: Copper
  • Electrode tip material: Iridium
  • Ground electrode core material: Nickel
  • Heat range: 9
  • Insulator type: Projected
  • Resistor: Yes
  • Shorty spark plug: No
  • Spark plug seat style: Gasket
  • Insulator type: Projected

Buy these high performing, long-lasting NGK Iridium spark plugs today.


  • NGK
  • New

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