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The Goodman B1392139 is a genuine OEM view port bushing for the Amana AMES960603BUAB gas furnace and related Goodman/Amana models. This bushing rings the burner sight/view port on the combustion cover, framing the opening a technician uses to observe the flame and confirm proper ignition and burner operation. It provides a clean, protected edge around the port and helps maintain the intended seal of the combustion enclosure.
The OEM B1392139 matches the port diameter and panel thickness exactly, so it snaps in and stays put. Generic grommets rarely match the AMES960 port cutout — an oversized or undersized ring falls out or won't seat, leaving a rough opening. At under a dollar, the correct factory bushing is the sensible replacement.
Difficulty: Very Easy (DIY-friendly). Under 5 minutes. Power off the furnace, press the old bushing out of the view port, and snap the new one into the panel opening. No tools required. A great add-on when replacing the combustion cover gasket or sight glass.