The Champion Iridium Spark Plugs 9407 RER8ZWYCB4 are high-quality ignition components designed for gasoline engines. Made by the reputable brand Champion in the United States, these spark plugs are manufactured to ensure reliable performance and long-lasting durability. With a quantity of 4 included in the package, these spark plugs are a crucial part of any car or truck's ignition system, helping to ensure smooth and efficient operation for improved overall performance.