Super Fire Racing Iridium Spark Plug

The HKS 50003-M45iL Super Fire Racing spark plug is engineered for high-performance applications, especially those with advanced tuning. Utilizing an M-Series design with a specialized iridium alloy, these plugs enhance ignition performance while providing superior durability and combating carbon buildup. The core of the M45iL's performance lies in its iridium alloy construction. This material boasts a high melting point (2454 degrees C) and exceptional durability, enabling it to withstand high compression ratios and minor knocking events without compromising the plug's integrity. Unlike standard plugs with narrower cores that can shorten lifespan, the iridium's robustness ensures longevity even under demanding conditions. A nickel coating on the housing further protects against premature deterioration. These spark plugs are available in various applications and heat ranges, with colder options starting at '7' and specific ranges of '9' and up offered for rotary engines. The HKS 50003-M45iL is noted to be suitable for 3.3t platforms, including the Kia Stinger and Genesis G70.