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The Goodman 0128F00006 is a genuine OEM chimney transition bottom that fits the Amana/Goodman AMH80403ANBD gas furnace. This sheet-metal transition routes combustion byproducts from the furnace's induced-draft outlet into the vent connector, ensuring a proper, leak-free seal along the flue path. A corroded or ill-fitting transition can allow flue gas leakage and reduce venting efficiency, so a correct OEM replacement matters for safe operation.
The OEM 0128F00006 is stamped to the exact dimensions and bolt pattern of this furnace cabinet, so it seats flush without gaps. Universal transitions require field modification and often leave leak paths. For flue components handling combustion gases, OEM fit is the safe choice.
Easy to Moderate — Power down the furnace and let the vent cool. Remove the existing transition screws, seat the new panel, reseal per code, and reconnect the vent connector. Verify draft after installation. Best performed by an HVAC professional where flue integrity is involved.