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The Goodman 4053501S Chimney Collar is the genuine OEM flue/vent component for the AMS81155CXAA 80% AFUE multi-position gas furnace and compatible Goodman/Amana models. It provides the correctly sized transition between the furnace flue outlet and the vent connector, maintaining proper draft and a safe, code-compliant seal for combustion byproducts.
This is a factory OEM part engineered to the exact flue diameter and mounting pattern of your furnace. Generic or universal collars often require field trimming and can leave gaps that compromise draft and safety. Choosing OEM guarantees a clean fit and preserves your equipment warranty.
A corroded, loose, or ill-fitting collar can allow flue gas leakage and poor venting, which can trip pressure switches or cause nuisance shutdowns. Installing the correct 4053501S restores a proper vent seal.
Install difficulty: Easy. Basic hand tools and 15–20 minutes for a qualified technician. Always shut off gas and power before servicing, and verify draft after installation. Professional installation is recommended for any combustion-venting component.