HKS MR-Series "Super Fire" Ruthenium Plugs
HKS
This is a stock-managed product, meaning stock levels are generally kept up-to-date.
If this product is showing "out of stock" then we will likely need to order it in for you.
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Product details
Planning on getting more power out of your Hyundai or Kia by installing a JB4, RaceChip, or tuning your ECU? You'll want to upgrade your spark plugs to make the most of your factory ignition system!
This new series of plugs inherits the best from the existing M series, however it now features a Ruthenium Alloy Electrode to provide a reliable spark for all vehicles, including vehicles with increased boost or tuned vehicles.
On top of extended lifetime, the use of Ruthenium alloy allows a better fuel burn, resulting in quicker throttle response, smoother idle and better cold starts (especially noticeable on the NGK9 range plugs vs. the existing M series)
The two options are:
- NGK8 for stock, or lightly tuned engines - these are a stock-replacement upgrade for the 1.6T in the i30 and Cerato GT
- NGK9 are for cars that are modified, tuned, or are being pushed harder than stock. Any increase of 50HP over factory generally requires a 1-heat-range colder drop in plugs. These are 1 range colder than stock for the 1.6T and 2.0T in the i30N, N-Line, and Cerato GT
Note: These plugs are only suitable for the 1.6T and 2.0T engines, they aren't suitable for the Stinger's 3.3TT
Disclaimer
No claims are made regarding the legality of any parts for road use. Parts are supplied for off-road/competition use only — it is the customer's responsibility to confirm local regulations before fitting parts for road use.