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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM flue/vent component for the AMVC80804CNBC gas furnace and compatible Goodman/Amana models. This transition piece adapts the furnace's induced-draft outlet to the vent connector, channeling combustion byproducts from the heat exchanger into the flue. A corroded, warped, or gapped transition can leak flue gases, disrupt draft, and cause pressure-switch faults — making a proper-fitting replacement important for safe, reliable venting.
The OEM 0128F00006 matches the exact flange pattern, dimensions, and draft geometry of the original, ensuring a sealed connection and correct draft pressure at the pressure switch. Generic or fabricated transitions can leave gaps, misalign the vent pipe, or trigger pressure-switch lockouts. For a flue-gas component, OEM fit is the safe choice.
Moderate — Shut off power, remove the vent connector and mounting screws, swap in the replacement, and re-seal all joints with approved high-temperature sealant. Verify proper draft and perform a combustion/spillage check. Flue work should be performed by a qualified HVAC technician.