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The Goodman B1392139 View Port Bushing is a genuine OEM sight-port grommet for the Goodman VMS80403AXAA gas furnace and compatible VMS80 series models. This bushing frames the burner inspection view port, letting a technician observe the flame while maintaining the cabinet's air seal around the opening. A cracked or missing bushing can allow air infiltration that affects burner performance and combustion inspection.
This small but exact-fit part matches the factory port diameter so it snaps in and seals without gaps. Generic grommets rarely match the opening and can fall out or melt near the burner. Choosing the OEM Goodman bushing guarantees correct fit and heat tolerance.
Very Easy. A push-in replacement — under 5 minutes with no tools. Remove the old bushing, press the new one into the view-port opening, and confirm it seats fully around the perimeter.