Set of 4 HKS M45XL Spark Plug

HKS plugs are our go-to choice for spark plugs for the 1.6L Turbo engine.

At a NGK Heat Range 9 equivalent, these plugs will ensure there is less heat when you are making more power. We highly recommend this plug when running our Tunes!

Here is a good article on Spark Plug basics by NGK.

HKS Plugs ignite faster for the best fuel efficiency and the best performance in all situations and environments. It is very important to provide safe and stable ignition for the engine to perform at maximum power. HKS Super Fire Racing plug is the best plug for extreme racing driving and also works well for normal tunes.

• 0.6mm Iridium Alloy Center Electrode
  Iridium alloy center electrode reduces voltage requirement and improves ignition performance and durability.
• Outer Electrode with Platinum Chip
  The outer electrode incorporates a square platinum chip which improves durability, and combining with the iridium center electrode boosts ignition performance.
  The outer electrode features a shortened tip design and tapered shape while maintaining the necessary space for proper ignition.
• Short Type Outer Electrode (Anti-Vibration)
  The outer electrode has been shortened and engineered with the ideal shape to decrease weight for resistance against vibration. This anti-vibration design improves longevity of the outer electrode.
• Thermal Edge
  After long idling or under various combustion conditions, carbon buildup can occur causing misfires. The thermal edge of the ceramic insulator discharges to help decrease carbon deposits.
• Spark Support Gap
  Discharge occurs in the spark support gap (space between the tip of insulator and the base of the outer electrode) to help prevent carbon buildup.