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The B1392139 View Port Bushing is a genuine OEM Goodman insert that lines and seals the flame-observation (sight) port on the Goodman DMS80703ANA gas furnace. It protects the sheet-metal edge of the viewing opening and helps maintain a proper seal so the burner box draws correctly. A missing or brittle bushing can allow air leaks around the port and expose the raw metal edge.
This Goodman OEM bushing is molded to the exact port diameter and panel thickness. Generic grommets are rarely rated for the temperatures near the burner compartment and may not snap in securely. OEM guarantees the correct fit and heat tolerance.
Easy. The bushing presses into the view-port opening by hand — no tools required, typically under 10 minutes. Disconnect power and let the furnace cool before servicing. An inexpensive but often-overlooked part worth keeping on hand.
Compatibility note: verify your model and part number before ordering.