Champion Spark Plug K9

The Champion K9 Spark Plug delivers reliable ignition and steady performance for 18mm diameter engines. Designed for standard spark plug applications, it features durable construction and a resilient electrode to resist fouling and wear. This plug promotes crisp throttle response, smoother idle, and consistent firing under varying loads, making it a solid choice for daily drivers and performance-focused engines alike. Its robust shell helps withstand high temperatures and road conditions, while a proven gap and seating design ensure easy installation and dependable starting. Ideal for fuel-injected and carbureted systems, the K9 is built to endure and maintain steady voltage, helping engines run cleanly and efficiently across miles.