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When it comes to your vehicle's spark plugs, ACDelco knows you have many choices. That's
why our Professional line of spark plugs includes Conventional plugs. With coverage for most
older vehicles on the road today and the robust long life design, ACDelco Professional Conventional
Spark Plugs are an economical choice for everyday reliability and solid performance. These spark
plugs feature a copper core center electrode that helps provide improved heat transfer
to the tip and increase durability by improving resistance to low speed carbon fouling. The
ribbed insulator seal extends resistance and prevents spark flash over and misfire, while
this black oxide coating prevents corrosion on exposed metal. The nickel chrome ground
and center electrode alloy help it resist wear from spark erosion and the corrosive
environment of the combustion chamber. And finally all ACDelco spark plugs are 100% end
of line tested to verify assembly and function. With design and manufacturing like this, we
stand behind our Professional Conventional Spark Plugs with a 12 month/12,000 mile limited
part warranty. As you can see, ACDelco is committed to providing you high quality spark
plugs to keep you and your vehicle on the road.