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The Goodman B1392139 is a genuine OEM view-port bushing (sight-glass grommet) for the AMVC80803BNCA variable-capacity gas furnace and compatible Goodman/Amana models. This bushing seats in the burner-compartment access opening, providing a clean, sealed sight port for inspecting the burner flame while maintaining the cabinet's combustion-air integrity. A missing or brittle bushing allows air leakage and can distort flame observation.
The OEM Goodman bushing is molded to the exact port diameter for a snug, rattle-free seat. Our generic-equivalent grommet fits the same opening at a lower cost and is ideal for quick maintenance kits. Both restore a proper, sealed viewing port.
Rating: Very Easy (1/5). Under 10 minutes and no tools required. With power and gas off, press the old bushing out and snap the new one firmly into the port opening until fully seated. Its low cost makes it worth replacing any time you service nearby components.
Verify the port size for your furnace before ordering. Need help? Email info@nationalhvacparts.com.