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The Goodman B1392139 View Port Bushing is a genuine OEM fitting for the Amana/Goodman AMVC80603BNCA 80% AFUE variable-speed gas furnace. This bushing frames the inspection/sight port on the burner compartment, allowing technicians to observe flame color and ignition while sealing the opening against air leakage. A missing or degraded bushing can distort combustion airflow and pressure readings.
The genuine OEM bushing is molded to the exact port diameter for a snug, sealing fit. Generic substitutes often fit loosely and can fall out or fail to seal, affecting combustion air balance. This inexpensive OEM part is worth doing right.
Rating: Easy (1/5). The old bushing pops out and the new one snaps into the port opening — no tools typically required. Ensure gas and power are off before opening the burner compartment.