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The B4022700 is a genuine Goodman/Amana 3-inch in-shot burner built for the AMH80804BNAA 80,000 BTU gas furnace. Each in-shot burner directs the gas/air mixture into the heat-exchanger tube for clean, stable combustion. Furnaces use one burner per heat-exchanger cell, so replacing a rusted, clogged, or misfiring burner restores even flame carryover, reliable ignition, and full heating output.
OEM in-shot burners are manufactured with the exact port pattern and length that match your furnace's manifold spacing and heat-exchanger geometry. Generic substitutes can alter flame shape and carryover, causing rough ignition or sooting. Because burner performance directly affects safety and efficiency, the OEM part is recommended.
Rated Moderate — burners are typically retained by a clip or slot at the manifold and slide into the heat-exchanger inlet. When replacing one, inspect the full burner set and igniter. Shut off gas and power, confirm correct alignment, and verify a clean blue flame after startup. Professional service is advised if flame issues persist.