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The M0570808 is a genuine OEM snap-in button plug for the Goodman/Amana AMVS960805CUAA furnace and many compatible Goodman and Amana units. Button plugs seal unused knockouts, wiring holes, and access openings in the furnace cabinet, keeping the sheet-metal enclosure sealed for correct airflow, reducing air leakage, and preventing debris or pest entry. Restoring a missing plug helps maintain the cabinet's designed static pressure and combustion-air integrity.
The OEM M0570808 is matched to the standard knockout diameter so its locking flange grips securely and sits flush. Generic plugs vary in size and may fall out or leave gaps. For a flush, secure seal, choose the OEM part.
Very Easy (1/5). Align the plug with the open hole and press until the flange snaps through — no tools required and under a minute. A handy spare to keep in the service kit.