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The Goodman B4022700 In-Shot Burner is a genuine OEM 3-inch combustion burner for the WGFM28070V4BXAA gas furnace. In-shot burners deliver a precise fuel-air jet into the heat exchanger tubes for clean, efficient ignition. Over time, burners rust, warp, or clog with debris, causing rough ignition, delayed lightoff, uneven flames, or lockouts. Installing the correct OEM burner restores a crisp blue flame and reliable heating.
This genuine Goodman OEM burner is stamped with the factory port size and venturi geometry that matches the furnace's gas orifice and manifold pressure. Generic burners with a slightly different port can shift the air-fuel mixture, causing sooting or noisy ignition. For a combustion component, matching the OEM spec is a safety and efficiency priority — replace all burners as a matched set when possible.
Moderate (3/5). Requires removing the burner assembly, sliding out the old burner, and seating the new one squarely over the orifice with correct alignment to the igniter and flame sensor. Recommended for a qualified HVAC technician; shut off gas and power before servicing.