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The Goodman B1392139 is the genuine view-port bushing for the Goodman ACVC960603BNBA condensing gas furnace. It seats in the combustion-chamber sight port, providing a sealed, heat-resistant opening that lets a technician safely observe the burner flame while keeping the combustion area airtight. A worn or missing bushing can let air leak into the sealed combustion zone and affect flame quality.
The OEM bushing is made from the correct high-temperature material and sized to the exact port diameter, ensuring a tight, durable seal at combustion-chamber temperatures. Generic grommets may degrade in heat or fit loosely, compromising the sealed combustion system. The genuine part is the safe, reliable choice.
Very easy (DIY-friendly). Replacement takes about 5 minutes with no special tools. Shut off furnace power, remove the old bushing from the view port, press the new one into place until fully seated, and confirm a snug, even seal around the opening before restoring power.