Description
We have the full selection of HKS Super Fire Racing spark plugs for race and tuning applications, featuring reinforced ignition capabilities, durability and anti-insulation.
The thermal edge of the ceramic insulator discharges to help decrease carbon deposits under long idling.
Their iridium alloy center electrode reduces voltage requirements and improves ignition performance and durability.
The heat ranges are designed to withstand high temperatures and pressures under racing conditions.
The M-HL series plugs are known for their fitment in vehicles with tight spark plug well access and specific M12 x 26.5 Long Reach thread with a narrow plug wrench size 14 mm / 0.55″
Notable applications include:
- Toyota 86 / Subaru BRZ / Scion FR-S (FA20 and FA24 engines): These are very common applications for the M45HL and M50HL, especially for tuned setups.
- Nissan GT-R R35 (VR38DETT engine): The M50HL is a highly recommended upgrade for high-horsepower R35 GT-Rs.
- Certain Honda (e.g., L15B1, LFA) and Infiniti (e.g., VQ35HR, VQ37VHR) engines that utilize these specific dimensions.
The chart below illustrates the respective Denso and NGK heat range indexes.
Choose the best option from the drop down menu.
