This listing is for a set of eight genuine NGK Laser Iridium spark plugs, part number 4904 with NGK designation ILFR6T11, engineered to deliver high ignitability, consistent combustion, and extended service life for compatible vehicles. NGK Laser Iridium spark plugs feature an ultra-fine iridium center electrode combined with advanced electrode design to produce a strong, focused spark that improves combustion efficiency, throttle response, and engine smoothness while supporting reliable cold starts and reducing misfires. Manufactured to meet or exceed OEM specifications, these spark plugs provide precise fitment and dependable performance without modification, making them suitable for professional technicians as well as experienced DIY installers. Replacing worn or conventional spark plugs with NGK Laser Iridium plugs helps maintain optimal engine power, improve fuel efficiency, and support cleaner emissions over long service intervals. NGK is a globally trusted leader in ignition technology, and this genuine 8-piece set offers proven quality, durability, and performance that inferior or counterfeit alternatives cannot match, delivering confidence and peace of mind mile after mile.