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The Goodman 4053501S Chimney Collar is a genuine OEM flue-vent component for the GMV80704BXA variable-speed gas furnace. This collar connects the furnace vent outlet to the chimney or vent pipe, providing a secure, properly sized transition for combustion exhaust gases. A correctly fitted collar is essential for maintaining safe draft and preventing flue-gas spillage into the equipment room. Damaged, corroded, or mismatched collars can compromise venting and lead to pressure-switch faults or carbon-monoxide safety issues.
The genuine Goodman OEM collar is sized to the exact vent-outlet diameter of this furnace, ensuring a leak-free connection and correct draft. Generic collars may not seal properly against the flue box, risking exhaust spillage. For a combustion-venting part, OEM fitment is the safe choice.
Moderate (2/5). Requires removing existing vent screws, seating the collar, and re-securing the vent pipe. Verify proper draft after installation. Shut off gas and power before servicing, and follow local venting codes.