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The Goodman B1392139 is a genuine view port bushing that seats in the burner-compartment sight/view port on Goodman and Amana furnaces, including the AMH80453AXCB. It provides a clean, sealed opening that lets a technician observe flame quality and burner ignition while keeping the combustion area properly closed. A cracked or missing bushing can allow air leakage and makes flame inspection harder.
The genuine bushing is molded to the exact port diameter so it snaps in and stays put through thermal cycling. Universal grommets often sit loose or fall out, leaving an unsealed opening. Because this part borders the combustion compartment, the correct OEM fit matters for a proper seal.
Very Easy (1/5). Push the old bushing out of the port and press the new one into place — no tools required in most cases. A few minutes at most. Power down the furnace before opening the burner compartment.
Authentic OEM part. If in doubt, match the original part number stamped on your furnace parts list before ordering.