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The Goodman B1392139 view port bushing is a genuine OEM fitting for the AMH80804BNBC gas furnace and compatible Goodman/Amana models. This small bushing/grommet frames the burner sight (view) port, allowing safe visual inspection of the flame while helping seal the opening in the burner compartment cover. Though inexpensive, a missing or brittle bushing can allow air leakage around the port or make it difficult to observe burner operation.
The genuine OEM bushing matches the exact port diameter and material rating of the original, snapping cleanly into place. Generic grommets may be the wrong size, fit loosely, or degrade near burner heat. At this price point, the OEM part is the obvious choice for a correct, lasting fit.
Easy (1/5). With power off, press out the old bushing and snap the replacement into the view-port opening. No tools required in most cases — a quick, inexpensive maintenance item.