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The Goodman B1392139 is a genuine OEM view port bushing for the ACVC960603BNAA variable-speed gas furnace. This bushing/grommet lines the inspection (sight) port on the burner or blower compartment, providing a clean, sealed opening through which the flame and burner operation can be observed. It protects the surrounding sheet metal edge and helps maintain the cabinet's air seal.
OEM vs. Generic: Because it sits near the burner area, this bushing must tolerate elevated temperatures and match the port diameter precisely. The OEM B1392139 is made to Goodman's heat and dimensional spec; generic grommets can shrink, harden, or fall out when exposed to burner heat.
Install Difficulty: Very Easy (1/5). Press the old bushing out and snap the replacement into the port — no tools required. Always shut off power and gas before opening the furnace.
Confirm fit by matching OEM number B1392139 to your furnace's exploded parts list.