50003-M40IL HKS Super Fire Racing Iridium Spark Plug

AED 108.00

HKS M-Series spark plugs are high performance Iridium plugs designed to provide improved ignition performance, durability and anti-carbon build-up.

  • 0.6mm Iridium Alloy Center Electrode
  • Outer Electrode with Platinum Chip
  • Short Type Outer Electrode (Anti-Vibration)
  • Thermal Edge
  • Spark Support Gap
  • M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load.
  • Heat Range – 8 (NGK)

The Iridium alloy is used because of its durability and reliability. On an average plug, a narrow core typically shortens life span of plug but with the intense durability of iridium there is no sacrifice in any longevity. With a high melting point of 2454 degrees C, as opposed to the 1769 degrees C of white gold, the electrode can tolerate the high levels of compression and minor knocking without any deterioration. A nickel coating on the housing also prevents the spark plug from premature deterioration. The Iridium plugs are available for multiple applications and offered in “colder” heat ranges of 7 and up and specifically for rotary, heat ranges of 9 and up are offered.


  • Subaru EJ25/ EJ20
  • Nissan Patrol TB48
  • Ford Focus ST
  • Mitsubishi Lancer Evolution 4G63

Category: Engine Components Brand: HKS