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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM venting component engineered for the ADVC81155CXAA gas furnace and compatible Goodman/Amana models. This transition piece forms the sealed connection at the base of the flue path, directing combustion byproducts safely into the vent system and maintaining proper draft for reliable, efficient operation.
This is a true OEM Goodman part built to factory tolerances, ensuring a leak-free seal and correct flue geometry. Generic or universal transitions often require trimming and can compromise draft or create dangerous flue-gas leaks. For a safety-critical venting component, we strongly recommend the OEM part.
Rating: Moderate. Replacement typically requires removing the vent connector and sealing the new transition with approved high-temperature materials. Because this handles combustion gases, we recommend installation by a qualified HVAC technician and a post-install draft/CO check.
Backed by exact-fit assurance. If you're unsure this part matches your unit, contact us at info@nationalhvacparts.com with your full model and serial number.