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The Goodman B1392139 View Port Bushing is a genuine OEM sealing bushing/grommet used at the combustion sight port on AMH80803BXBC furnaces. It seals the viewing opening used to observe the burner flame, keeping the combustion chamber closed to outside air while allowing safe visual inspection.
This small bushing is molded to the exact port diameter and made from heat-resistant material suited to its location near the combustion chamber. A generic grommet of the wrong size or material can allow air infiltration that disrupts the flame or degrades quickly under heat. At this price point, the genuine OEM part is the obvious choice.
Difficulty: Very Easy (1/5). Press-fit replacement. Pop out the old bushing, clean the opening, and press the new one fully into the port. Under 5 minutes with no tools required beyond the disconnect.
Always shut off power and gas before opening the furnace. Confirm the bushing is fully seated so the port remains sealed.