NGK Spark Plug (NGK) General-purpose plug (screw type/no terminal) 1 piece [4929] DPR8EA-9

[Terminal Shape] Screw Type NGK spark plugs have a copper core inserted deep into the nickel portion of the center electrode to dissipate a large amount of heat, making them highly resistant to burning and fouling, and capable of operating in a remarkably wide temperature range. They offer excellent insulation even at high temperatures, and the corrugations (folds) on the head further enhance insulation and prevent flashover. Their good thermal conductivity prevents the plug from overheating.