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The M0570808 is a genuine OEM Goodman button plug engineered to seal unused knockout holes and access ports on the VMSS961005CNAA furnace cabinet and compatible Goodman gas furnace models. When a wiring, sensor, or accessory port is left open, this snap-in plug restores the cabinet's air seal and keeps rodents, dust, and drafts out of the burner and control compartment.
Genuine OEM M0570808 plugs are sized to the exact factory knockout diameter, so they snap flush and stay seated under vibration. Generic universal plugs are often a loose or oversized fit that can pop out over time, breaking the cabinet seal. For a proper, worry-free fit, we recommend the OEM part.
Easy (1/5). No tools required in most cases — simply press the plug into the open knockout until it seats. Always shut off power and gas before servicing your furnace.
Backed by genuine Goodman quality. If you are unsure whether this part fits your unit, contact us at info@nationalhvacparts.com with your model and serial number.