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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner for gas furnaces, engineered as a direct-fit replacement for the Goodman and Amana AMS81205DXAA furnace. One burner is required per manifold tube, so most 80% AFUE furnaces use several identical burners. Replace burners that show rust, cracking, distorted flame carryover slots, or that produce a weak, yellow, or lifting flame — all signs of a burner that is no longer firing cleanly.
Burner geometry directly controls flame shape and carryover between tubes. This OEM Goodman burner is stamped to the original venturi and slot pattern, ensuring reliable cross-lighting and correct flame impingement in the heat exchanger. Generic burners can cause delayed ignition, roll-out, or uneven heating. For a combustion component, OEM is the safe choice.
Moderate (2 of 5). Budget 20–30 minutes. Shut off gas and electrical power before servicing. Remove the burner box cover, note orientation, slide out the old burner, and install the B4022700 aligned to the ignitor and flame sensor. Verify a clean blue flame after restart. If you are unsure about combustion safety, use a licensed HVAC technician.
Genuine Goodman quality, in stock and ready to ship.