The Midco International 5231-99 Natural Gas Spark Rod Assembly is a replacement ignition component designed for reliable starting of natural-gas-fired HVAC and heating equipment. It works by producing an electrical spark that ignites the gas-air mixture in the burner, enabling consistent and controlled combustion. This assembly is commonly used in Midco burners, gas-fired furnaces, bo... https://www.partshnc.com/5231-99-midco-international-natural-gas-spark-rod-assembly