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The Goodman B1392139 is a genuine OEM view port bushing for the AMH80453AXCA gas furnace and compatible Amana and Goodman models. This small grommet-style bushing seats in the burner compartment sight port, sealing the opening a technician uses to visually inspect the flame while keeping the combustion area closed to the surrounding cabinet.
A missing, melted, or brittle bushing can allow air leakage around the port and make the sight opening hard to seal after inspection. Replacing it with the correct OEM piece restores a clean, tight port.
OEM bushings are molded to the exact port bore and temperature rating for this cabinet. Generic grommets frequently fit loose, fall out, or deform near the burner heat. At this price point there's no reason not to use the genuine part.
Difficulty: Very easy (1/5). With the furnace powered off and the burner-compartment door removed, press the old bushing out and snap the new one into the port opening. A one-minute, tool-free swap. Reinstall the panel before returning the furnace to service.
Genuine OEM replacement part. Confirm your furnace model and serial before ordering.