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The Goodman B1392139 View Port Bushing is a genuine OEM replacement grommet that seals the sight-glass/observation port on the burner compartment of your AMES961205DNAA 96% AFUE two-stage gas furnace. This small but essential fitting keeps the viewing window airtight so the flame-observation port maintains proper combustion-chamber pressure and blocks flue-gas leakage. A cracked, brittle, or missing bushing is a common cause of a wobbly or leaking sight glass after years of heat cycling.
This is the factory OEM Goodman part, molded to the exact bore and flange dimensions of your furnace's port opening. Generic universal grommets often sit loose or fail to seat fully, allowing air infiltration that disrupts the pressure switch and combustion. Choosing the genuine B1392139 guarantees a snug, leak-free seal the first time.
Easy (1/5). No tools required in most cases — simply pull the old bushing and press the new one into the port opening. A 5-minute job for any homeowner. Always shut off gas and power to the furnace before servicing.