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The Goodman B4022700 is a genuine OEM 3-inch in-shot gas burner engineered for the AMS80903BXA gas furnace and compatible Goodman and Amana 80% AFUE models. Each in-shot burner directs a precise gas/air mixture into its heat exchanger tube, where it ignites to produce clean, efficient combustion. Furnaces use one burner per heat exchanger cell, so match the quantity to your unit's burner count when ordering.
The genuine OEM B4022700 is dimensioned and ported to deliver the factory flame pattern and correct alignment with the igniter and flame sensor. Generic burners can misalign the flame, cause rough ignition, or produce improper combustion. For safe, efficient heating, OEM burners are strongly recommended.
Moderate (3/5) — Requires removing the burner assembly and manifold to access and align each burner with its heat exchanger tube. Shut off gas and power first; professional installation is recommended given the combustion safety involved.