Upgrade your vehicle's ignition system with the Champion Spark Plug Copper Plus 318C2 Pack of 2. These spark plugs, made in the United States, feature copper material and are specifically designed for car and truck parts and accessories. The Champion Spark Plug brand is trusted by many car enthusiasts and these plugs will surely provide reliable performance for your vehicle. With the manufacturer part number RC12MC4, these spark plugs are easy to install and will fit perfectly with your ignition system.