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NGK Iridium Spark Plug Box of 4 - Subaru 02-05 WRX - (#3764 - BKR6EIX-11)

NGK Iridium Spark Plug Box of 4 - Subaru 02-05 WRX - (#3764 - BKR6EIX-11)


Regular price $40.99 USD
Regular price Sale price $40.99 USD
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The improved throttle response, superior anti-fouling, and high-ignitability make Iridium IX ideal for the performance enthusiast. Iridium’s extremely high melting point is perfectly suited to today’s high-temperature engines, delivering outstanding acceleration, fuel efficiency, and durability.

  • Fine iridium tip ensures high durability and a consistently stable spark
  • Trivalent metal plating for superior anti-corrosion and anti-seizing properties
  • Outstanding acceleration, high fuel efficiency, and durability

Iridium IX Spark Plug (3764) is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost.


Laser Iridium is designed alongside OEMs to meet quality and durability standards for each manufacturer. Featuring high-grade alumina silicate ceramic and fine wire center electrodes, the Laser Series brings OE performance to every engine.


  • Thread Diameter: 14mm
  • Thread Pitch: 1.25mm
  • Seat Type: Gasket
  • Reach: 19mm (3/4")
  • Hex Size: 5/8" (16mm)
  • Terminal Type: Solid
  • Overall Height: ISO
  • Gap: .043" (1.1mm)
  • Center Electrode
  • Material: Iridium
  • Type: Fine Wire
  • Size: 0.6mm
  • Projection: Projected
  • Ground Electrode
  • Material: Nickel
  • Type: Standard
  • Shape: Taper Cut
  • Quantity: 1
  • Resistor: Yes
  • Resistor Value: 5k Ohm
  • Heat Range: 6
  • Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
  • Electrode Material: Iridium
  • Insulator Type: Projected
  • Nominal Gap: 1.1 mm



  • Manufactured to boost your engine’s performance
  • Engineered utilizing the finest materials and equipment
  • Provides reliable, hassle-free operation
  • Made in compliance with high industry standards
  • Made to perform and built to last


Subaru Fitment:

  • SUBARU 2002-2005 WRX
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