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The Goodman 4053501S Chimney Collar is a genuine OEM flue vent fitting for the GMV81155CXBA and compatible GMV8-series 80% AFUE gas furnaces. The collar mounts at the furnace vent outlet and provides the transition point where the vent connector (flue pipe) attaches, ensuring a secure, properly aligned draft path for combustion byproducts.
A corroded, loose, or improperly sized chimney collar can lead to flue-gas leakage, poor draft, condensation damage, and unsafe operation. Replacing it with the correct OEM fitting restores a tight, code-compliant connection between the furnace and the venting system.
The OEM Goodman chimney collar is sized to the exact vent-outlet diameter and mounting pattern of the GMV8 cabinet, so the flue connector seats correctly without gaps. Generic collars may not match the outlet flange or bolt pattern, risking leaks at a safety-critical joint. Because this part carries combustion gases, OEM fit is recommended.
Moderate. Requires disconnecting the vent connector, removing the old collar, and sealing the new collar to the cabinet and flue pipe with approved high-temp materials. Draft should be verified after installation. Given the flue-gas safety implications, professional installation by a licensed HVAC technician is recommended.
Questions about your venting setup? Contact info@nationalhvacparts.com with your model and serial number.