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The Goodman 0128F00006 Chimney Transition Bottom is the genuine OEM flue/vent component for the ACVC81005CXCA gas furnace. This transition piece connects the furnace heat exchanger outlet to the venting system, channeling combustion byproducts safely toward the chimney or flue. A properly fitted transition maintains correct draft, prevents flue gas spillage, and protects against condensation and corrosion at the vent connection.
OEM Goodman transitions match the exact flange pattern, dimensions, and gasket seat of your furnace, ensuring a leak-free seal. Generic or fabricated substitutes risk gaps that allow flue gas leakage — a safety hazard. For any venting component, the OEM part is the safe choice.
Moderate — requires disconnecting the vent pipe and resealing the transition. Always verify draft and check for spillage with a combustion analyzer after installation.