NGK ILZFR6C-K 6645 Spark Plug Iridium ILZFR6CK

The NGK ILZFR6C-K 6645 Iridium Spark Plug combines NGK’s legendary engineering heritage with advanced iridium alloy for superior longevity and reliable ignition. With roots dating back to the 1930s, NGK has produced thousands of plug types to meet stringent manufacturer specifications, ensuring consistent performance across engines, including motorcycles, marine, and automotive applications. The 14mm diameter design delivers precise heat transfer, smooth cold starts, and efficient combustion, making it a trusted choice for demanding engines and high-mileage use. Engineered for durability, reduced fouling, and stable firing, this plug embodies NGK’s alignment with world-leading spark plug technology.