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The B1392139 is a genuine OEM view-port bushing for Goodman ADSH800603AXAC gas furnaces and compatible models. This bushing seats the flame-observation sight port in the burner-box cover, giving a clean, sealed opening to inspect the burner flame while keeping the combustion chamber closed. A cracked or missing bushing can allow air leakage and makes the sight port rattle or fall out.
The OEM Goodman bushing matches the exact port diameter and material, snapping in flush and sealing correctly. Generic grommets often fit loose or degrade near the heat of the burner box. For a proper, lasting seal, choose OEM.
Rated 1/5. A tool-free snap-in replacement — pop out the old bushing and press the new one into the burner-cover opening. Always shut off power and gas before opening the burner compartment.