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The Goodman M0570808 Button Plug is a genuine OEM snap-in plug for the Goodman ACVM970803BNAA furnace and compatible Goodman/Amana models. It seals knockouts and unused mounting or wiring holes in the furnace cabinet, blocking air leaks, dust, and pest intrusion while restoring the cabinet's factory appearance.
Maintaining a sealed cabinet is important for proper draft, combustion airflow, and energy efficiency. A missing button plug creates an air-bypass path that can degrade performance and allow debris inside the unit.
The OEM M0570808 matches Goodman's exact knockout diameter for a secure, flush snap fit. Generic plugs frequently fit loose and pop out under vibration, reopening the air-bypass leak you were trying to close.
Very Easy (1/5). Press the plug into the open hole until it snaps flush — no tools required. De-energize the furnace before servicing.