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The Goodman 0128F00006 is a genuine OEM chimney transition bottom (flue/vent adapter) designed for AMS80805CXAA gas furnaces and compatible Goodman/Amana 80% AFUE models. This formed-metal transition connects the furnace's induced-draft outlet to the vent pipe/chimney connector, channeling flue gases safely out of the appliance. A corroded, cracked, or ill-fitting transition can leak combustion byproducts and disrupt draft, so a proper OEM replacement is essential to safe venting.
The genuine OEM 0128F00006 matches Goodman's exact flange dimensions and vent-collar diameter, ensuring a sealed, correctly drafted connection. Generic or shop-fabricated transitions may not seat properly, risking flue-gas leakage. For a vent component that handles combustion products, the OEM part is strongly recommended.
Difficulty: Moderate. Shut off power and gas, disconnect the vent connector, remove fasteners/sealant, and swap the transition, then reseal and re-secure the vent — typically 30–45 minutes. After service, verify proper draft and test for spillage/CO at the vent. Professional installation is recommended for venting work.