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The Goodman B4022700 In-Shot Burner is a genuine OEM 3-inch gas burner engineered for the VCES800804BXAA furnace. Each in-shot burner directs the gas/air mixture into a heat-exchanger tube for clean, even combustion. Rusted, clogged, or corroded burners cause rough ignition, flame rollout, delayed light-off, and yellow flames — all signs it is time to replace them, ideally as a matched set.
The OEM B4022700 is manufactured to the exact port and venturi geometry your furnace was tuned for, ensuring correct air/fuel mixing and a stable blue flame. Generic burners can alter the flame pattern, leading to sooting, hot spots, or safety lockouts. For a combustion component, we strongly recommend genuine OEM burners.
Replacement requires removing the burner assembly and sliding each burner off the manifold. Replace all burners together for consistent combustion, verify correct alignment with the igniter and flame sensor, and confirm a clean blue flame after startup. Shut off gas and power before servicing; if you are unsure, use a licensed technician.