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The 0128F00006 is a genuine OEM chimney transition bottom engineered for the Goodman/Amana AMS81405DNBC gas furnace and compatible multi-position models. This sheet-metal transition seats at the base of the flue collector, channeling combustion byproducts from the heat exchanger into the vent connector while maintaining the manufacturer's tested draft geometry. Using the correct OEM transition preserves proper venting and keeps your furnace within its listed AFUE and safety specifications.
This is the genuine Goodman OEM part, dimensioned to match the factory flue path exactly. Aftermarket transitions often require bending or shimming and can alter draft, risking spillage or nuisance limit trips. For a venting component, exact fit matters — we recommend OEM.
Easy to Moderate. A qualified HVAC technician can replace this part in roughly 20–30 minutes with basic hand tools. Because it handles flue gases, installation should follow the furnace's venting instructions and be leak-checked after service. Always shut off gas and power before servicing.