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The Goodman B1392139 View Port Bushing is a genuine OEM grommet-style fitting for the Goodman WFM18045S3AXCC furnace. This small but important component seals the sight-glass viewing port on the burner compartment, letting a technician confirm flame appearance while keeping the combustion cabinet properly sealed. A dried, cracked, or missing bushing lets air leak past the port and can affect flame observation and cabinet integrity.
Because it's a sealing part on combustion equipment, exact dimensions and heat rating matter. A loose aftermarket grommet can fall out or degrade. This genuine OEM bushing matches the original diameter and material spec so the port seats tightly and holds up to furnace-compartment temperatures.
Very easy (1/5). A 5-minute job: with power and gas off, press the old bushing out of the port and snap the new one in. No tools required. It's inexpensive enough to keep a spare on hand during any burner-area service.
Ships fast with genuine-part confidence for your Goodman furnace.