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The Goodman 0128F00006 is a genuine OEM chimney flue transition (bottom section) for the AMH81405DXCA gas furnace and compatible Goodman and Amana models. This sheet-metal transition channels combustion byproducts from the furnace's induced-draft outlet into the vent connector, ensuring proper draft and safe evacuation of flue gases from the appliance.
OEM transitions are stamped to the furnace's exact dimensions and mounting-hole pattern, so they seal correctly against the flue collar without gaps. A fabricated or universal substitute can leave leak paths that let flue gas escape — a carbon-monoxide hazard. For venting components, exact-fit OEM parts are the safe standard.
Moderate — Requires disconnecting the existing vent connector, removing the old transition, and sealing the replacement with high-temperature foil tape or approved fasteners. Proper draft testing is recommended after installation. Best handled by an HVAC technician.