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The B1392139 View Port Bushing is a genuine OEM Goodman/Amana component engineered for the AMH81005CNBD gas furnace. This small but essential grommet seats the burner-compartment sight glass (view port), allowing safe visual inspection of the flame while sealing the inspection opening against air leaks and combustion byproducts. A cracked, missing, or hardened bushing can cause a poor seal, nuisance pressure-switch faults, and unsafe viewing conditions — this direct-fit replacement restores factory tolerances.
The genuine OEM B1392139 is molded to the exact diameter and durometer specified by Goodman, ensuring a leak-tight snap fit. Generic grommets may be close in size but often loosen, allow air infiltration, or degrade quickly under repeated heat cycling. For a component that guards combustion safety, OEM is the recommended choice.
Easy (1/5). No tools required — press the old bushing out and snap the replacement into the panel opening. Always shut off power and gas before servicing. Under 5 minutes for most technicians and handy homeowners.
Backed by our fitment guarantee. Questions about compatibility? Contact info@nationalhvacparts.com.