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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM flue/vent component for the AMVC80804CXBC gas furnace. This transition piece connects the furnace's flue collar to the vent system, forming the sealed pathway that carries combustion byproducts out of the appliance. A properly fitted transition maintains draft and ensures flue gases are directed safely to the chimney or vent connector.
OEM vs. Generic: Vent components must match the furnace's collar dimensions and clearances exactly to seal correctly and preserve proper draft. The OEM 0128F00006 is stamped to fit this cabinet without modification. Fabricated or approximate substitutes risk flue-gas leakage—a carbon-monoxide hazard—and are best avoided on any venting component.
Installation difficulty: Moderate (3/5). Shut off power and gas and allow the furnace to cool. Remove the existing transition, clean the mating surfaces, and secure the new part with the original fasteners and any specified high-temp sealant. After reassembly, verify a tight, leak-free vent connection and confirm proper draft on startup. When in doubt, have a licensed technician verify venting.
Genuine Goodman OEM part. Unsure this matches your vent setup? Email info@nationalhvacparts.com with your model and serial number.