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The Goodman M0570808 is a genuine OEM snap-in button plug used to seal unused knockouts and access holes on the cabinet of the AMVC960603BNBA modulating variable-speed gas furnace. These plugs close off factory openings left after wiring or venting configuration, preventing air bypass, blocking pests and debris, and preserving the cabinet's designed airflow path. A missing button plug can create a bypass that reduces blower efficiency and lets conditioned or combustion air escape.
The OEM M0570808 is molded to the exact knockout diameter so it snaps in flush and locks securely. Universal generic plugs are often the wrong size, sitting proud or falling out under vibration. The genuine Goodman plug delivers a positive, flush-mounted seal that stays put through years of blower cycling.
Easy — DIY friendly. No tools required. Turn off power to the furnace, align the plug with the open knockout, and press until it snaps fully into place. Verify it is locked and flush before restoring power.
Seal your AMVC960603BNBA cabinet correctly with the genuine Goodman M0570808 button plug.