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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner built for the ACES800403AXAA gas furnace. The in-shot burner directs the gas/air mixture into the heat-exchanger tube for clean, complete combustion. Rust, scale, or a distorted burner causes rough ignition, flame rollout, sooting, or short cycling — replacing a damaged burner restores reliable, efficient heating.
The OEM B4022700 is sized and ported to deliver the exact flame pattern the ACES800403AXAA heat exchanger is engineered for, protecting efficiency and the AFUE rating. Generic burners can alter the air-fuel mix or flame geometry, risking rollout and exchanger damage. For a combustion component, OEM is strongly recommended.
Allow 30–45 minutes and replace all burners as a matched set when possible. Shut off gas and 120V power, remove the manifold/burner assembly, slide out the old burner, seat the new one in the same orientation, and reassemble. After restart, confirm a crisp blue flame with no rollout. If you are not comfortable working with gas, use a licensed HVAC technician.