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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner built as a direct-fit replacement for the AMS80453ANA 80% gas furnace and related Goodman/Amana models. Each in-shot burner delivers the gas/air mixture into the heat exchanger tube for a stable, evenly distributed flame. Replacing warped, rusted, or clogged burners restores clean ignition and eliminates rollout and delayed-ignition problems.
OEM in-shot burners are stamped and ported to match the factory manifold spacing and orifice alignment, ensuring the flame carries correctly across all burners. Generic burners can sit at the wrong height or have mismatched ports, causing uneven flame, sooting, and flame-sensor dropouts. We recommend replacing burners as a matched set for consistent performance.
Moderate (2/5). Shut off gas and power, remove the burner assembly retaining screws, slide out the old burner, and index the new B4022700 over the orifice. Verify flame carry-over and inspect the flame-sensor position after reassembly. A licensed technician should confirm gas pressure and combustion.