The Lochinvar & A.O. Smith 100301928 Straight Spark Igniter Assembly is an ignition component designed for compatible gas-fired HVAC heating equipment and water heating systems. It generates a high-voltage electrical spark that ignites the gas-air mixture in the burner, initiating reliable combustion and heating operation. Commonly used in compatible Lochinvar and A.O. Smith boilers, ... https://www.partshnc.com/100301928-lochinvar-ao-smith-straight-spark-igniter-assy