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The 4053501S chimney collar is the flue-vent connector for the Goodman/Amana AMS80453ANAA 80% AFUE gas furnace. It fastens to the draft hood or vent outlet and provides the sized transition where the single-wall or B-vent pipe attaches, ensuring a tight, properly aligned connection that carries combustion byproducts safely to the chimney. A missing, corroded, or ill-fitting collar can allow flue-gas spillage and failed draft.
The OEM Goodman/Amana collar is stamped to the exact diameter and screw pattern of the furnace vent outlet, so the flue pipe seats without gaps. Generic collars often need shimming or extra sealing that can compromise draft. For a code-compliant, leak-free vent connection, use OEM.
Easy (2/5) — Disconnect the vent pipe, remove the old collar screws, seat the new collar, and re-secure the pipe with sheet-metal screws and high-temp sealant as required. Always verify proper draft after install. Typical time: 15–25 minutes.