NGK Iridium Spark Plug 7 Series LFR7AIX, NGK 2309 -Set of 4

NGK Iridium Spark Plug 7 Series LFR7AIX, NGK 2309 -Set of 4


NGK's IX Iridium Series Plugs were Designed Specifically for the Performance Enthusiast.

  • Fine Wire Center Electrode Ensures High Durability and a Consistently Stable Spark
  • Iridium Alloy has an Extremely High Melting Point, Perfect for Today's High-Tech, High Performance Engines
  • Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
  • Corrugated Ribs Prevent Flashover
  • Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
  • Copper Core Aids in Heat Removal Triple Seals Prevent Leakage

Includes 4 spark plugs.

  • Heat range: 7
  • 1 step colder than factory for the listed applications
  • Gap: 0.032" (0.8mm), for high boost up to 22 PSI we recommend a gap size of 0.028-0.03". For boost levels between 23-28 then set the gap to 0.026". 
  • 2006-2014 2.5L WRX
  • 2004-2018 2.5L STi
  • 2004-2013 2.5L Forester XT
  • 2004-2013 2.5L Legacy GT / Outback XT
  • 2003-2006 2.5L Baja XT
  • JDM ej20x and ej20y

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