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The Goodman 4053501S Chimney Collar is a genuine OEM flue-venting component for ADV80703BXBA gas furnaces. The collar is the transition fitting where the furnace's flue/draft outlet connects to the vent pipe, sealing the exhaust path and maintaining proper draft. A rusted, warped, or missing collar can allow flue-gas leakage and poor venting — a safety-critical condition.
The OEM Goodman collar matches the factory flue-outlet diameter and screw pattern for a tight, leak-free seal. Generic collars may not seat correctly, risking exhaust leakage and draft problems. Because this part is part of the combustion-venting system, OEM fitment is strongly recommended for safety and code compliance.
Easy (2/5). Shut off power and gas, detach the vent pipe, remove the old collar's fasteners, and install the new collar with proper sealing. 15–30 minutes. Always verify draft and check for flue-gas leaks with the furnace running; consult a technician if in doubt.