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The Goodman B4022700 3-inch In-Shot Burner is a genuine OEM replacement burner for the AMV80905CXA gas furnace. In-shot burners deliver the gas/air mixture into the heat exchanger tubes for ignition, and a corroded, rusted, or cracked burner can cause poor flame quality, delayed ignition, sooting, or rollout. Installing the correct OEM burner restores a clean, stable flame and safe, efficient combustion.
Factory-original Goodman burners are matched to the furnace's manifold pressure and orifice sizing for correct flame geometry. Generic burners can seat improperly or alter the flame pattern, risking incomplete combustion. When burner performance affects combustion safety, OEM is strongly recommended.
Moderate (3/5). Requires removing the burner assembly, manifold, and orifices. Shut off gas and power before servicing, and verify flame quality after reassembly. Best performed by a qualified HVAC technician. Replace all burners as a set if others show wear.