The Champion RF14YC 21 Spark Plug is a standard configuration spark plug designed for gasoline-fueled vehicles. Manufactured by Champion, this spark plug features a copper material construction for reliable performance. The Manufacturer Part # and OE/OEM Part Number for this spark plug is RF14YC, making it easy to identify and replace in compatible vehicles. Overall, this spark plug is a quality choice for maintaining ignition system efficiency in cars and trucks.