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The Goodman B4022700 3-inch In-Shot Burner is a genuine OEM gas burner that mixes air and fuel and directs the flame into the heat exchanger tube of your furnace. It is a direct-fit replacement for the VDS80603AXAA and compatible Goodman/Amana gas furnaces. Furnaces use one in-shot burner per heat-exchanger cell, so it is common to replace the full set at once. Rusted, sooted, or corroded burners cause rough ignition, delayed light-off, flame rollout, and poor combustion — installing fresh OEM burners restores clean, even flame propagation.
The genuine Goodman OEM burner is dimensioned and ported to match the factory gas orifice and air shutter, ensuring the correct fuel-air ratio. Generic burners with slightly different port geometry can shift the flame pattern, causing lazy yellow flames, sooting, or nuisance flame-sensor lockouts. For a combustion component, OEM matching is strongly recommended.
Moderate (3/5). Requires shutting off gas and power, removing the burner assembly, and reseating the burner over the orifice with correct alignment to the igniter and flame sensor. Best performed by an experienced DIYer or technician; verify flame quality after install.
Gas work carries risk — if you are not comfortable, hire a licensed HVAC technician. Always shut off gas and power before servicing.