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The Goodman M0570808 Button Plug is a genuine OEM snap-in plug for the Amana/Goodman AMVM970803BNAA modulating variable-speed furnace. It seals unused cabinet knockouts and access holes in the furnace sheet metal, maintaining the proper enclosure seal on a sealed-combustion appliance. A missing button plug allows conditioned or combustion air to leak through the cabinet, which can affect furnace efficiency, draft, and pressure-switch behavior.
OEM vs. Generic: Genuine M0570808 plugs are sized to the exact knockout diameter used on the AMVM97 cabinet, so they snap in flush and stay put. Off-brand plugs are often the wrong diameter or too shallow, popping out over time and reopening the leak. The OEM plug is inexpensive insurance for a clean, sealed cabinet.
Install Difficulty: Easy (1/5). Power down the furnace, align the plug with the open knockout, and press until the retaining flange snaps behind the sheet metal. No tools needed — under 5 minutes. Confirm all panels reseat properly after replacement.