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The AO SMITH 100368388 is an OEM replacement pilot assembly designed for natural gas water heater systems. The assembly includes the pilot tube and all components required to restore reliable ignition to a standing-pilot water heater. When the pilot fails to light or hold a flame, this direct-replacement assembly restores proper operation without modification. Licensed plumbers and HVAC technicians install this part during routine service or after a pilot outage diagnosis. It matches original factory specifications, making it a straightforward drop-in repair for qualified service professionals.
This pilot assembly is intended for residential natural gas water heater applications where the original ignition assembly has failed or is no longer functioning reliably. It is suited for standing-pilot style gas water heaters in standard heating configurations. Verify the model number of the water heater before ordering to confirm fitment.
Designed as an OEM-style replacement pilot assembly for AO SMITH natural gas water heaters with standing-pilot ignition systems.
Installation should be performed by a licensed plumber or qualified gas appliance technician in accordance with local codes and the appliance manufacturer's service instructions. Shut off the gas supply and allow all components to cool completely before disassembling the pilot assembly. Inspect the thermocouple and gas valve connections during service, as these components interact directly with the pilot assembly. Do not restore gas supply until all connections are verified leak-free using an approved leak detection method.
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