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The Goodman B1392139 View Port Bushing is a genuine OEM component for the AMVC81005CXBB gas furnace. This bushing seals and frames the burner inspection sight port, letting you safely observe the flame and ignition sequence while maintaining a clean seal against the burner compartment. Over time these bushings can become brittle, cracked, or clouded — replacing with the exact OEM part keeps the view clear and the seal intact.
The genuine OEM bushing is molded to the precise port diameter and depth of your furnace, so it snaps in flush and seals correctly. Generic grommets rarely match the exact opening and can pop out or leak, defeating the purpose of the port. For a clean, lasting fit, choose OEM.
Very Easy (1/5) — A tool-free, push-in replacement. Power down the furnace, remove the old bushing from the port, and press the new one into place. Under 5 minutes for most homeowners.