NGK ILFR6J-11K 4458 Spark Plug Iridium ILFR6J11K

The NGK ILFR6J-11K 4458 Iridium spark plug delivers dependable performance and long life for modern engines. Built with a fine iridium alloy center electrode, it provides precise ignite timing and strong combustion efficiency across a wide temperature range. Its 14mm thread and tapered ground electrode design promote consistent spark delivery, reducing misfires and improving throttle response. This plug is engineered for durability in demanding driving conditions, offering excellent resistance to fouling and corrosion. Whether you're tuning a daily commuter or optimizing a performance setup, the ILFR6J-11K helps maximize fuel economy, smooth idle, and reliable starts. Ideal for a variety of vehicles requiring an 11K iridium plug, it pairs longevity with steady, predictable ignition performance.