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This genuine OEM 3-inch in-shot burner (part B4022700) is a direct-fit replacement for the Amana AMH80805CXAA 80% gas furnace. In-shot burners deliver the gas/air mixture into each heat-exchanger tube; over time rust, scale, or spider-web blockage distorts the flame, causing noisy ignition, delayed light-off, or flame rollout. Replacing a corroded burner restores a clean, well-defined blue flame and quiet, efficient combustion. Multiples of this burner are typically installed per furnace — order the quantity your unit requires.
The OEM Goodman/Amana burner matches the factory venturi, port size, and mounting tab exactly, ensuring the flame aligns correctly with the flame sensor and heat-exchanger inlet. Generic in-shot burners vary in throat diameter and can shift flame position — for combustion components we strongly recommend OEM to keep flame proving and CO output in spec.
Requires removing the manifold/burner assembly, swapping the burner, and re-seating it to the heat exchanger. Best done by a qualified tech who can verify flame appearance and combustion after the repair.