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The OEM Goodman 0128F00006 is the bottom chimney transition piece for the Amana AMH80805CNBB 80% AFUE natural-draft gas furnace. This formed sheet-metal component directs combustion byproducts from the induced-draft blower into the flue/vent connector, maintaining the sealed pathway required for safe venting. A corroded or missing transition can leak flue gases into the equipment space — this genuine replacement restores a proper, code-compliant vent connection.
Venting components must match the furnace's exact flue geometry. This genuine OEM transition is stamped to factory dimensions so it seals cleanly against the collector box and vent pipe — generic fabricated pieces rarely align and risk flue-gas leakage.
Moderate (3/5). Requires removing the vent connector and resealing joints. Because it handles combustion gases, we recommend a licensed HVAC technician verify draft and check for spillage with the furnace running.