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The Goodman B1392139 View Port Bushing is a genuine OEM component for the WFD18045S3AXCB furnace and related Goodman/Amana models. This small bushing seats into the furnace panel to form the flame-observation view port, holding the sight window in place and maintaining a proper seal around the opening. Though inexpensive, it plays a real role in keeping the combustion area sealed and allowing safe visual inspection of the burner flame during service.
Because this bushing must fit an exact panel cutout and tolerate furnace-cabinet heat, the genuine Goodman part guarantees the correct diameter and material rating. Generic grommets may not seal properly or may degrade near the combustion zone, so OEM is the safe, drop-in choice.
Easy. The bushing presses into the panel opening by hand — no tools required. Simply remove the old bushing and snap the new one into place while the furnace is powered off.
Keep your furnace view port sealed and serviceable with the authentic Goodman B1392139 bushing.