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The Goodman B1392139 is a genuine OEM view port bushing for the AMH80804BXBB gas furnace. This small grommet-style fitting seats in the burner compartment access panel and holds the sight-glass view port, giving a clean, sealed opening to observe burner flame during operation while keeping the combustion compartment properly closed. A missing, cracked, or deformed bushing lets the view port rattle loose or leak air around the inspection opening.
The genuine OEM B1392139 is molded to the exact panel cutout and view-port diameter of the AMH80804BXBB, so it snaps in and holds securely. Generic bushings are rarely sized to this specific port and tend to sit loose or fall out, defeating the seal. For a proper, retained fit, use the OEM bushing.
Rating: Easy. Press the old bushing out of the panel and snap the new one into the same opening by hand — no tools needed. Turn off power before opening the burner compartment.
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