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Genuine OEM Goodman/Amana B4022700 3" In-Shot Burner for the AMVC81155CXAA modulating variable-speed gas furnace. The in-shot burner directs the gas/air mixture into the heat exchanger tube where it ignites. Corroded, rusted, or clogged burners cause rough ignition, delayed light-off, uneven flame, and flame rollout — replacing them restores clean, even combustion.
Burner port pattern, throat diameter, and length are tuned to the AMVC81155CXAA gas manifold and orifices. A mismatched generic burner can alter the flame envelope and increase rollout risk. The OEM burner matches the factory flame characteristics exactly.
Rated 3/5. Cut power and shut off gas, remove the manifold/burner assembly, slide the old burner off the orifice, and align the new one to the flame sensor and igniter. Budget 30–45 minutes and verify flame stability after restart.
Replace all burners as a set for uniform ignition. Always shut off gas and power before servicing.