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Part number B1392139 is an OEM view port bushing for the Goodman/Amana AMVC960803BNBA 96% AFUE modulating gas furnace. This bushing frames and seals the sight-glass / observation port on the burner or blower compartment, allowing technicians to safely view flame and inducer operation while maintaining the sealed-combustion integrity of the cabinet. A missing or degraded bushing can allow air leakage that affects pressure-switch readings and burner performance.
This genuine Goodman bushing is molded to the exact panel-hole diameter and thickness of your furnace, delivering a clean, airtight seat. Generic grommets frequently fit loose or fail to seal, compromising the sealed-combustion envelope. The OEM part restores factory fit and keeps the unit within specification.
A quick, tool-free replacement. Power off the furnace, pop out the old bushing, and press the new one into the panel opening until fully seated around the port edge. No fasteners or adhesive required.