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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM flue-vent component engineered for the Goodman/Amana AMH80703AXCB 80% AFUE gas furnace. This galvanized-steel transition connects the furnace vent outlet to the chimney or B-vent connector, maintaining a proper draft path and a sealed flue interface so combustion byproducts are safely evacuated.
This is the factory OEM transition, cut and formed to the exact gauge, flange, and bolt pattern of the furnace vent box. Generic universal transitions often require field trimming, extra sealing, and can leave gaps that leak flue gas or disrupt the draft. Choosing OEM guarantees a leak-tight, code-compliant fit the first time.
Moderate. Requires disconnecting power, removing the existing transition, and sealing the new piece with approved high-temp foil tape or sheet-metal screws. Because this part is part of the flue/venting system, we recommend installation by a licensed HVAC technician and a post-install draft/CO check.