Arnold's K5RTC Universal Spark Plug is a high-performance replacement spark plug designed to deliver reliable ignition and consistent engine starting in a wide range of small engine applications. Engineered for efficient combustion, it helps improve throttle response, reduce misfires, and support smooth, dependable operation. Built for durability and compatibility with many popular outdoor power equipment engines, this universal spark plug is ideal for routine maintenance to help maintain optimal engine performance. | Arnold K5RTC Universal Spark Plug