Universal 24V Silicon Nitride Flame Rod and Ignitor Assembly. A direct replacement for all 24V hot surface ignitor Smart Valve Systems. Tough as nails.  
Designed to replace many types of furnace, boiler or water heater igniters. A universal replacement silicon nitride igniter - a durable new technology with low energy consumption. Made by Supco. Part no. SSN24

  Silicon Nitride Ignitor and Flame Rod Assembly Kit (Smart Valve)- - 24V - Durable Silicon Nitride - For furnaces, unit heaters, fireplaces, spas, pool heaters, boilers and hot water heaters - Will replace Honeywell smart valves including 1st and 2nd generation. Includes ignitor, instructions, direct plug-in assembly (no need to for wire nuts) and metal mounting bracket. Made by Supco.