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This genuine OEM Goodman chimney transition bottom (part #0128F00006) is the factory flue-venting component for the AMES800805CXAA gas furnace and related Goodman/Amana models. It forms the sealed transition between the furnace vent outlet and the chimney/flue connector, directing combustion byproducts safely out of the appliance. A properly fitted transition is essential for correct draft and safe venting.
Because venting components must seal precisely to the furnace collector box and vent pipe, the OEM transition matches factory dimensions and mounting holes exactly. A generic or hand-fabricated substitute risks flue-gas leakage, poor draft, and code-compliance issues. OEM is the recommended choice for any combustion-venting part.
Moderate (3/5). Requires removing the existing transition, cleaning sealing surfaces, and re-securing with sheet-metal screws and high-temp sealant. Shut off power and gas, and verify draft after reassembly. Comfortable-DIY or professional recommended.
Genuine OEM fit and fast shipping from National HVAC Parts.