The Lochinvar & A.O. Smith 100093984 Natural Pilot/Thermopile with Tubing is a replacement ignition assembly designed for compatible gas-fired boilers and water heater HVAC systems. It produces a pilot flame and generates electrical power through the thermopile to operate the gas control valve without an external power source. The included tubing ensures proper gas delivery to the pil... https://www.partshnc.com/100093984-lochinvar-ao-smith-nat-pilotthermopile-wtubing