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The Goodman B4022700 3-inch In-Shot Burner is a genuine OEM replacement engineered for AMH80604BNBD gas furnaces and compatible Goodman/Amana 80% AFUE models. The in-shot design meters gas into the heat-exchanger tube for a stable, evenly distributed flame, restoring clean ignition and efficient combustion after a burner has warped, corroded, or begun to produce a rough or lazy flame.
This is the factory OEM burner, machined to the exact port geometry your furnace was designed around. Generic burners are cheaper but often differ in flame-crossover timing and port size, which can cause delayed ignition, roll-out, or nuisance lockouts. For a heat-exchanger component, we recommend OEM for guaranteed combustion performance and safety.
Difficulty: Moderate. Requires shutting off gas and power, removing the burner assembly, and swapping burners one-for-one. Roughly 30–45 minutes for an experienced DIYer; a flame and gas-leak check is required afterward. If you are unsure, use a licensed HVAC technician.