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The B1392139 is a genuine OEM Goodman view-port bushing (sight-glass grommet) built as a direct-fit replacement for the Amana/Goodman AMVC800803BNAB furnace. This bushing lines and seals the observation port on the burner/combustion door, giving technicians a clear window to inspect flame quality while keeping the combustion chamber sealed against air leaks.
A cracked, brittle, or missing bushing allows secondary air infiltration that can distort the flame reading and upset combustion. This inexpensive part restores a clean, sealed sight glass.
The genuine OEM B1392139 is molded to the exact port diameter and temperature rating of the burner door. Generic grommets rarely match the bore and can loosen or melt near the combustion zone. For a sealed, safe fit, choose OEM.
Very Easy (1/5) — A 5-minute press-fit swap requiring no tools. Shut off power and gas, then seat the new bushing into the view-port opening. One of the simplest furnace repairs.