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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner engineered for the AMVC81005CNBC 80% AFUE two-stage variable-speed gas furnace and compatible AMVC8 / GMVC8 series units. Each burner directs the gas-air mixture into a single heat-exchanger tube, producing the clean, even flame a furnace needs for quiet, efficient, and safe operation. Furnaces of this size typically use four to five of these burners in a manifold assembly, so replacing a cracked, rusted, or clogged burner restores balanced firing across the entire heat exchanger.
OEM vs. Generic: This is a factory-spec OEM burner machined to the exact port geometry and mounting dimensions of your furnace. Generic universal burners are cheaper but often fire unevenly, sit loosely on the manifold, or shift flame position — which can trip the flame sensor or scorch the heat exchanger. For a heating component, OEM fit is worth the small premium.
Install difficulty: Easy to Moderate. Shut off gas and power, remove the burner box cover, slide the old burner off the manifold orifice, and seat the new one in the same slot. Most DIYers finish in 20–30 minutes with basic hand tools. If you are unsure about gas connections, have a licensed HVAC technician perform the swap.