Spark Plug NGK Laser Iridium SILZKR7A-S (7718)

The NGK 7718 (SILZKR7A-S) spark plug is a high-tech solution utilizing precious metals: an iridium core and a platinum chip on the ground electrode. This combination (Laser Iridium series) provides an ultra-long service life and maximum resistance to erosion under high-temperature conditions in modern combustion chambers. The long-reach thread and special insulator shape promote efficient heat dissipation and prevent misfires at high RPMs. The spark plug features superior ignitability, directly impacting engine responsiveness and idle smoothness. The SILZKR7A-S part number is often an original equipment (OEM) part for modern engines of Korean and Japanese manufacturers, such as Hyundai, Kia, and Honda. Using this spark plug minimizes the risk of catalytic converter damage due to stable fuel combustion within the cylinder.