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The Goodman B1392139 View Port Bushing is the genuine OEM grommet that seals the flame-inspection (sight) port on AMH80453ANAC gas furnaces and compatible Goodman/Amana models. This small but essential fitting maintains a tight seal around the burner viewing window, preventing flue-gas leakage and combustion-air disruption while still allowing a technician to visually inspect the burner flame.
Because this bushing sits directly on the burner box, it must withstand sustained high heat without shrinking, cracking, or deforming. The genuine OEM B1392139 is molded from the correct heat-rated compound and sized to the exact port diameter. Generic O-rings or universal grommets may not seal properly or may degrade quickly under combustion heat, leading to air leaks and nuisance flame-sensing issues.
Very Easy (1/5). Under 5 minutes—simply pop the old bushing out of the burner-box port and press the new one into place. No tools required. Turn off power and gas before servicing the burner compartment.