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The Goodman B1392139 is a genuine OEM view port bushing (also called a sight-glass grommet) engineered for the AMVM971205DNAA modulating gas furnace and compatible Goodman/Amana 96%-97% AFUE models. This small but critical part seals the flame-inspection window in the burner compartment, keeping the combustion area airtight while giving technicians a clear line of sight to verify a proper flame during service.
This is the genuine OEM Goodman bushing, molded to the exact bore and temperature rating of the original. Generic grommets often shrink, harden, or fall out of the port after repeated heat cycles, breaking the combustion seal. The OEM part guarantees a factory-tight fit and full compatibility with your furnace's certified design.
Easy (1/5) — Push-in replacement requiring no tools. Power down the furnace, pop the old bushing out of the view port, and seat the new one. A 5-minute job for most homeowners and every HVAC tech.
Compatible with model AMVM971205DNAA. If your model differs, message us with your unit's model and serial number and we'll confirm fitment before you buy.