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The Goodman B1392139 view port bushing is a genuine OEM component for the furnace model ADSH800603AXAA and related Goodman/Amana gas furnaces. It lines and secures the sight-glass inspection port on the burner compartment, giving technicians and homeowners a safe, sealed window to observe the flame during startup and troubleshooting. The bushing keeps the view port grommet properly seated and helps maintain the compartment seal so combustion air and flue gases stay contained.
Because it sits on a combustion-compartment penetration, an OEM Goodman bushing is the correct choice — it snaps into the factory opening for a flush, secure fit. Generic grommets can be loose or the wrong diameter, allowing the port to whistle, leak, or fall out over time.
Very easy (1 of 5). With power and gas off, pop the old bushing out of the view-port hole and press the replacement in until it seats. No tools are typically required and installation takes just a few minutes. Verify the port cover reseats cleanly afterward.