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The Goodman B1392139 is the OEM view port bushing for the Amana/Goodman AMSS961005CNAA 96% AFUE gas furnace. It seats in the inspection/sight port on the burner or combustion area, providing a clean, sealed grommet through which the flame and burner status can be checked. A worn or missing bushing can compromise the seal around the view port and allow air infiltration that affects the sealed-combustion system.
The genuine OEM Goodman bushing matches the exact bore and heat rating required for a combustion-area location — something generic grommets are not designed for. Using the correct OEM part ensures a proper seal and safe, code-compliant operation near the burner.
Very Easy (1/5). Power down the furnace, press the old bushing out of the port, and seat the new one. A 5-minute job with no specialized tools.