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The Goodman B1392139 View Port Bushing is the genuine OEM grommet that seals the burner-flame inspection (sight) port on the AMVC80805CNBB gas furnace. This small but important part keeps the combustion chamber sealed while letting a technician view the burner flame. A cracked, hardened, or missing bushing can allow air leakage and affect combustion.
Sizing on view-port bushings is furnace-specific. This OEM Goodman/Amana bushing matches the exact bore and flange of your inspection opening for a snug, airtight seat. Generic grommets frequently sit loose or fall out under heat cycling.
Very Easy (1/5). No tools required beyond removing the burner cover. Push the old bushing out and press the new one in. A 5-minute job — power and gas off first.