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The Goodman B1392139 View Port Bushing is a genuine OEM grommet/sight-port seal used on the burner compartment of the AMH80905CXCC and compatible Goodman and Amana furnaces. It seals the inspection opening that lets a technician observe the burner flame while keeping the combustion compartment closed and preventing air leakage. A cracked, brittle, or missing bushing can allow combustion-air disturbance and should be replaced to maintain a clean flame signal and proper furnace operation.
The genuine OEM bushing is molded to the exact port diameter for a snug, heat-tolerant seal. Generic grommets are rarely sized correctly and can loosen or degrade near the burners, allowing an air leak that affects flame stability. For a proper fit, OEM is recommended.
Rating: Very Easy (1/5). With the furnace powered off and cool, pop the old bushing out of the port and press the new one firmly into place until it seats. No tools required; typical time is under 5 minutes.