Super Fire Racing M45iL Iridium Spark Plug

The HKS 50003-M45iL is a Super Fire Racing Iridium spark plug from HKS's M-Series line. Constructed with a durable iridium alloy for the center electrode, these spark plugs boast a high melting point of 2454 degrees C, significantly higher than white gold. This allows them to withstand high compression and minor knocking without deterioration. The nickel-plated housing further protects against premature wear. The M45iL features a long reach type design with a 14mm thread size and a 26.5mm thread reach, complemented by a 16mm hex size for easy installation. These plugs are available in "colder" heat ranges, with a range of 7 and up generally offered, and specific ranges of 9 and up available for rotary applications. While the product page prompts users to select their vehicle to confirm fitment, HKS M-Series Super Fire Racing spark plugs are known to be used in performance applications such as the Kia Stinger 3.3TT. All plugs are sold individually.