ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. Product Features:Black Onyx coating helps reduce corrosionCopper core provides great heat transfer and helps maximize plug durabilityRibbed suppressor seal extends resistance and helps prevent spark 'flash over' and misfiresNickel-chrome alloy sheathing helps prevent corrosion on center electrodeAvailable for use in Marine applicationsSome ACDelco Gold parts may have formerly appeared as ACDelco ProfessionalPremium aftermarket replacement partManufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
