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The Goodman B4022700 3-inch In-Shot Burner is a genuine OEM gas burner for the Goodman/Amana AMS80604BXAC and compatible 80% AFUE furnaces. In-shot burners deliver a precisely shaped gas/air mixture into each heat-exchanger tube, producing a stable, evenly distributed flame for efficient, quiet combustion. Furnaces of this size use one burner per heat-exchanger cell, so order the quantity your unit requires.
Burners can corrode, distort, or accumulate scale over time, causing rough ignition, flame roll-out, or uneven heating. Installing correct OEM burners restores clean light-off and proper flame carryover across the burner rack.
Genuine Goodman burners are dimensioned and ported to match this furnace's manifold pressure and orifice sizing. Generic burners can alter the air/fuel mix and flame pattern, hurting efficiency and ignition reliability. For a combustion component, OEM is strongly recommended.
Moderate — Requires removing the burner assembly and aligning to the manifold; 20–40 minutes. Shut off gas and power first; verify flame and check for leaks after service. Professional installation recommended.