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Genuine OEM Goodman/Amana B1392139 View Port Bushing for the AMVC81155CXAA gas furnace. This bushing seats in the burner-compartment sight glass, letting a technician safely observe flame and ignition through the inspection port while keeping the combustion area properly sealed. A cracked or missing bushing can allow air leaks around the port and obscure the flame view.
This is a precision molded, heat-rated part sized to the AMVC81155CXAA port opening. Generic grommets rarely match the diameter or temperature rating, so they loosen or deform near the burners. The OEM bushing is the correct, inexpensive fix.
Rated 1/5. Cut power, remove the burner-compartment door, press out the old bushing, and snap the new one into the port opening. No tools required in most cases — under 5 minutes.
Inspect the sight glass while you're in there. Always disconnect power before opening the burner compartment.