The ACDelco GM Original Equipment Spark Plug 41-103, with part number 12681663, is a high-quality ignition component designed specifically for gasoline vehicles. Made in the United States, this spark plug has a 1-year manufacturer warranty and operates at a consistent voltage of 12V. With a length of 3.7 inches and a quantity of 2 included in the package, this spark plug is a reliable choice for maintaining optimal engine performance in your vehicle. Built by ACDelco, a trusted brand known for producing OEM parts, this spark plug ensures a smooth and efficient ignition system for your car or truck.