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APR EA825/EA839/9A2 Iridium Pro Spark Plug - Heat Range 10 - 12mm x 26.5mm x 14mm - SINGLE

by APR
Sale
Original Price $64.51 NZD
Current Price $61.28 NZD
SKU Z1004081
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Refresh your ignition system in one shot with APR Iridium Pro Spark Plugs and pair with APR Ignition Coils – engineered to work together for a stronger, more consistent spark. Each is a direct-fit upgrade designed to support smoother idle, sharper throttle response, and reliable performance under heat and load—whether you’re stock or running higher boost and power upgrades.

Features and Benefits

  • Heat range 10 spark plug (Similar: Bosch 2, Brisk 8, Denso 31, and NGK 10)
  • 152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum.
  • Stronger than copper and platinum
  • Designed for high performance / tuned vehicle applications
  • Non-projected insulator design
  • Lower required supplied voltage
  • Cooler operating temperature than stock plugs
  • Optimized electrode design for hard to ignite fuels, such as ethanol
  • Resists preignition better than stock plugs
  • Perfect for upgraded APR vehicles
  • An excellent match for APR ignition coils
  • Thread reach: 26.5mm
  • Thread diameter: 12mm
  • Hexagon: 14mm
  • Seat Type: Gasket
  • Install Torque: 17 Nm
  • Insulator Material: Ceramic
  • Supplied Gap: .55mm +- .05mm
  • 2 steps colder than OEM (4.0T EA825)
  • 1 step colder older than OEM (2.9T/3.0T EA829, 2.0T/2.5T/3.0T/3.7T 9A2)
  • Made in the EU