The 2543 SPARK PLUG suppressors set of four by Autolite are high-quality spark plugs designed for use in vehicles. Made in the United States, these spark plugs are reliable and durable, providing optimal performance for your car or truck. With the Autolite brand known for producing quality automotive parts, you can trust that these spark plugs will ensure smooth and efficient ignition systems in your vehicle. Upgrade your vehicle's ignition system with this set of four Autolite spark plugs.