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The Goodman 4053501S Chimney Collar is a genuine OEM flue fitting for the Amana/Goodman AMH80703ANAC 80% AFUE gas furnace. The chimney collar connects the furnace draft hood to the vent pipe, providing the correct opening diameter and a secure seat for the flue connection. A corroded or ill-fitting collar can leak flue gases and disrupt draft — this factory part restores a safe, tight venting connection.
OEM vs. Generic: The OEM 4053501S is sized to the AMH8 draft-hood opening and vent diameter exactly, ensuring proper draft and a leak-free seal. Because this is a combustion-venting component, using the genuine part is critical for safe flue-gas evacuation. Generic collars may not seal correctly, risking spillage and carbon monoxide concerns.
Install Difficulty: Easy (2/5). Shut off power and gas, disconnect the vent pipe, remove the old collar fasteners, seat the new collar, and reconnect the flue. Always verify proper draft after installation. When in doubt, have a licensed technician confirm safe venting.