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The Goodman B4022700 In-Shot Burner is a genuine OEM 3-inch gas burner designed for ADS80904BXA furnaces and compatible Goodman/Amana models. The in-shot burner delivers the gas/air mixture into the heat exchanger for clean, efficient combustion. Over time burners can corrode, rust, or develop misaligned flames, causing rough ignition or delayed lighting — replacing a worn burner restores reliable, quiet startup.
This factory-original Goodman burner matches the exact length, port pattern, and venturi geometry your furnace's manifold was designed around. Generic burners can shift flame position relative to the flame sensor and igniter, causing flame-sensing faults. Burners are usually replaced as a matched set across all tubes.
Moderate — requires removing the manifold/burner assembly and reseating each burner over its orifice. Recommended for experienced DIYers or a qualified technician. Always shut off gas and power before servicing.