Product Information
- Replacement racing spark plug used by many professional car drivers
- Unique, special designed shell with "X-gap" groove to run cooler and allow for improved flame kernel development
- These plugs have 3/4-inch reach gasket seat with 14mm threads
- Copper-glass, non-resistive seal bonds insulator, terminal post, and center electrode together ensures full required voltage at spark gap
- Coated in an anti-corrosive nickel plating to prevent rusting
