The Bosch HVAC 8733951178 Ignitor is a replacement ignition component designed for compatible Bosch gas-fired heating equipment. It generates the heat or ignition needed to ignite the fuel-air mixture in the burner assembly, initiating the heating cycle. Commonly used in gas furnaces and other compatible heating systems, this ignitor supports reliable startup and consistent burner ope... https://www.partshnc.com/bosch-hvac-8733951178-ignitor