These spark plugs are one of the brand s most technologically advanced spark plugs ever. With an iridium-enhanced .6 mm finewire design and proprietary platinum sidewire technology, these spark plugs provide better durability and a more focused ignition for better overall ignitability and optimum performance.
- Official plug of Nascar
- Iridium-enhanced center electrode
- Patented, platinum sidewire technology, patented injection molded ceramic insulator
- .6-mm finewire design