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The Goodman M0570808 Button Plug is a genuine OEM component for the ACSS920804CNAA furnace and many related Goodman/Amana units. This snap-in plug seals knockouts and unused mounting or wiring holes in the furnace cabinet and control panel, keeping out dust and pests while maintaining the proper cabinet seal for correct airflow and combustion. Missing button plugs are a frequent cause of air leaks and rattling panels.
The genuine Goodman plug matches the factory hole diameter for a flush, retained fit. Generic plugs are often oversized or undersized, pop out under vibration, or leave gaps that defeat the cabinet seal. The OEM part restores a tight, finished appearance and proper airflow.
Very Easy (1/5). Push the plug into the open hole until it snaps flush — no tools needed. Turn off power to the furnace before servicing. Consult your parts diagram to confirm the correct hole location.