The RBI Boiler 16-0304 Spark Rod is an ignition component designed to support reliable burner operation in compatible RBI boiler systems. It works by producing an electrical spark that ignites the fuel-air mixture in the burner, helping initiate the heating cycle. This component is used in compatible commercial and industrial HVAC boiler equipment for space heating and hydronic heatin... https://www.partshnc.com/16-0304-rbi-boiler-spark-rod