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The Goodman B1392139 View Port Bushing is a genuine OEM fitting for the ACVM960604CXAA 96% AFUE modulating gas furnace. This bushing seals and frames the burner-flame inspection (sight) port, letting you safely view burner ignition and flame quality while keeping the combustion area sealed. A cracked or missing bushing can allow flue gas leakage and false flame-sensor readings, so replacing it with the correct factory part is important for safe operation.
The genuine Goodman bushing is molded to the exact port diameter and rated for the temperatures found near the burner box. Generic grommets may not be heat-rated and can shrink, crack, or fall out, compromising the combustion seal. OEM ensures a safe, lasting fit.
Very Easy (1/5) — Press the bushing into the port opening by hand. No tools required. Always shut off power and gas and allow the furnace to cool before servicing. A simple, fast replacement.