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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM flue-venting component for the Goodman ACEC800603AXAA gas furnace and compatible Goodman/Amana models. This stamped transition piece channels hot combustion products from the heat exchanger collector into the vent connector, maintaining proper draft and clearances. A correctly fitted transition is essential for safe, code-compliant venting of flue gases out of the home.
OEM vs. Generic: The genuine OEM 0128F00006 matches the exact stamping, hole pattern, and clearances of this furnace cabinet, ensuring a leak-free seal at the collector and vent connection. Universal sheet-metal substitutes rarely line up correctly and can leave gaps that allow flue-gas leakage. For a venting safety part, OEM fitment is recommended.
Installation difficulty: Moderate (★★★☆☆). Power down the furnace, remove the existing transition, transfer or replace gasketing, and secure with the factory screws. Confirm a tight, sealed joint and verify proper draft after restart. Improper venting is a carbon-monoxide hazard — if unsure, consult a qualified technician.