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The Goodman B1392139 View Port Bushing is a genuine OEM grommet that seals and trims the sight-glass viewing port on the burner compartment door of the Amana/Goodman AMH81005CXBA gas furnace. The view port lets a technician observe the burner flame during operation; the bushing keeps the opening sealed against air leakage and secures the port cover. A missing or brittle bushing can allow combustion-air disruption and rattling at the access door.
The OEM Goodman bushing is molded to the exact port diameter so it snaps in and seals cleanly. Generic grommets rarely match the groove depth and can fall out or fail to seal, defeating the purpose of the port. Given the low cost, OEM is the obvious choice.
Very Easy (1/5). Press the old bushing out of the door opening and snap the new one into the groove. Under 5 minutes, no tools needed.