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The genuine Goodman B1392139 view port bushing is a factory OEM sight-glass grommet used on the AMVC960603BNAA modulating variable-speed gas furnace and compatible Goodman/Amana models. It seals the flame-observation port in the burner compartment, letting a technician safely view the burner ignition and flame while keeping the combustion cabinet airtight. A cracked, missing, or brittle bushing can cause combustion-air leakage and nuisance flame-sensing faults, so replacing it with the correct OEM part restores proper sealing.
This is a genuine OEM Goodman component engineered to the exact bore diameter and temperature rating of the burner cabinet. Unlike generic universal grommets, the OEM bushing guarantees a leak-free seal and correct fitment the first time, avoiding combustion issues that off-spec substitutes can introduce.
Easy (1/5) — a simple push-in replacement requiring no tools. Always shut off gas and power before servicing.