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The Goodman 0128F00006 is a genuine OEM chimney transition bottom for the Amana/Goodman AMVC80805CXBA 80% AFUE two-stage variable-speed gas furnace. This flue/vent transition adapts the furnace's draft hood collar to the vent connector, directing combustion byproducts safely into the chimney or vent system. A corroded, warped, or mismatched transition can leak flue gases or disrupt draft, so an exact OEM fit matters.
The genuine Goodman 0128F00006 matches the factory collar diameter, flange pattern, and screw holes so it seats without gaps. Generic sheet-metal transitions often need trimming and can leave leak paths for flue products. For a venting component, correct OEM geometry is the safest and quickest install.
Shut off power and gas, remove sheet-metal screws securing the old transition, fit the replacement, and re-secure — typically 20–30 minutes. Confirm a tight, sealed vent connection and verify proper draft before returning the furnace to service.