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The Goodman 4053501S chimney collar is a genuine OEM flue/vent component for the Amana/Goodman AMS80905CNAA 80% AFUE gas furnace. The collar mounts at the draft hood/vent outlet and provides the correct transition between the furnace flue connection and the vent pipe, maintaining proper draft and a safe seal for combustion byproducts.
Venting components are safety-critical. This genuine OEM collar matches the factory outlet diameter and mounting pattern so the vent connection seals correctly the first time. Generic or fabricated collars can leave gaps that allow flue-gas spillage or degrade draft, risking improper combustion. The OEM part removes the guesswork from a code-sensitive connection.
Easy–Moderate (2/5). Requires shutting off power and gas, disconnecting the existing vent pipe, and swapping the collar with basic hand tools. Because it involves combustion venting, we recommend a qualified HVAC technician verify draft and check for spillage with the furnace running. Always confirm the vent connection is tight and the flue is clear before returning the unit to service.
Compatible with Amana and Goodman furnaces. Verify your model and part number before ordering.