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The Goodman 4053501S is a genuine OEM chimney collar (flue vent connector) engineered for the GDS80904BXA gas furnace and compatible Goodman/Amana models. This collar forms the transition between the furnace's induced-draft outlet and the vent pipe, ensuring a proper seal and correct draft so combustion byproducts are safely carried away from the home.
The genuine 4053501S is sized to the exact flue diameter and mounting pattern of this furnace, providing a leak-free fit that maintains proper draft. Generic collars may not seal correctly, risking flue-gas leakage or draft problems. For a venting component tied to combustion safety, OEM fitment matters.
Moderate (3/5). Requires disconnecting the vent pipe, removing sheet-metal screws, and resealing the connection. Because it involves the flue and combustion venting, verify a proper seal and correct draft after installation. If you are not experienced with furnace venting, hire a licensed HVAC professional.