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The B1392139 view port bushing is the genuine OEM grommet/seal for the burner observation (sight) port on the Goodman/Amana AMH80905CXCB furnace and compatible 80% AFUE models. This small component seals the opening used to visually inspect the burner flame, keeping the combustion area properly closed so the furnace maintains correct draft and safe operation. A missing, cracked, or hardened bushing can allow air leakage that affects the flame and pressure-switch signal.
The OEM B1392139 is molded to the exact port diameter for a snug, leak-free seat. Our generic equivalent matches the fit at a lower cost. Both are new — an inexpensive part that's worth replacing whenever you open the burner compartment.
Press-fit into the port opening by hand; no tools needed. Under 5 minutes. Cut power before accessing the burner area.
Confirm fit against your existing bushing before ordering. Support: info@nationalhvacparts.com.