The Champion 405 RN14YC Spark Plugs are high-quality ignition system components designed for gasoline-powered vehicles. Made with copper material, these spark plugs are durable and reliable for optimal engine performance. Manufactured in the United States, these Champion spark plugs are suitable for various car and truck models, making them a trusted choice for automotive maintenance and repairs. With a focus on quality and efficiency, the Champion 405 RN14YC spark plugs are a great addition to any vehicle's ignition system.