The Copper Plus Champion Spark Plugs 818 RN2C are high-quality spark plugs designed for optimal performance in vehicles. Made with durable copper material, these spark plugs are trusted for their reliability and longevity. The Champion brand is known for producing top-notch ignition components, and the 818 model is no exception. With a California Prop 65 Warning for nickel, drivers can feel confident in the safety and efficiency of these spark plugs for their vehicle.