ACDelco R44XL Professional Conventional Spark Plug (Pack of 1)
- Black Onyx coating helps reduce corrosion.
- Copper core provides great heat transfer and helps maximize plug durability.
- Ribbed suppressor seal extends resistance and helps prevent spark ‘flash over†and misfires.
- Nickel-chrome alloy sheathing helps prevent corrosion on center electrode.
- Available for use in Marine applications.