The 4 Pack of 4 Autolite Iridium XP5263 Spark Plugs 16 total plugs is a high-quality automotive replacement part designed to ensure reliable and efficient engine performance. These spark plugs, manufactured by Autolite, are specifically designed to meet the OE/OEM part number XP5263 and come in a convenient 4-pack size. With this product, car enthusiasts can trust that their engine will run smoothly and efficiently, thanks to the superior quality and compatibility of the Autolite Iridium XP5263 spark plugs.