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The genuine Goodman/Amana B1392139 view port bushing is the sight-glass grommet that seals the burner observation port on the AMH81155CXCC and related Goodman-family furnaces. It lets a technician view the burner flame during operation while maintaining a proper seal against the combustion chamber. A cracked, missing, or melted bushing can allow air leakage that affects flame quality and pressure-switch operation.
This inexpensive OEM part is sized to the exact port diameter and rated for the heat near the burner assembly. Generic grommets often do not seal fully or degrade quickly at furnace temperatures, so the authentic B1392139 is the reliable choice for a proper, long-lasting seal.
Rating: Very Easy (1/5). Simply press the old bushing out of the port and snap the new one in — under 5 minutes, no tools required. Turn off furnace power before servicing.