Direct bolt-in replacement for the stock spark plugs in many different Hyundai/Kia motors, including the 1.6T motor in all modern Hyundai/Kia cars.
These are available in heat range 9 for modified cars and heat range 10 for very heavily modified cars that are frequently driven hard on the street or the track. The trade-off will be harder starting in cold weather, especially for the heat range 10 plugs.
These are an alternative to the popular HKS M45XL plugs for when stock is not available.
Note: we currently have the NGK10 plugs in stock, but NGK9 is backordered