Set of 4 HKS M45XL Spark Plug

$135.00 USD Sale Save

Fits the following vehicles:

  • Hyundai/Kia 1.6T Gamma
  • Hyundai N Cars
  • No warranty available from SXTH Element.
  • See Terms and Conditions for additional warranty information.

Some products offered by SXTH Element and SXTHNK are not capable of shipping to states that have adopted the C.A.R.B. Standard. Those products can include anything induction or exhaust related. If this product is incapable of shipping to your location, you will not be able to checkout with it. More information can be found in the link below.

C.A.R.B. & E.P.A Information

WARNING: May contain items that are found to have compounds and/or chemicals known to the State of California to cause cancer, birth defects, and reproductive harm.

For more information, please visit www.P65Warnings.ca.gov

HKS plugs are our go-to choice for spark plugs for all of the Hyundai and Kia engines.

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.
HKS Plug Diagram

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