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The Goodman B4022700 3-Inch In-Shot Burner is a genuine OEM replacement burner for the Goodman ADSS800603AXAC gas furnace. In-shot burners fire directly into the heat exchanger tubes; over time the ports corrode, rust-flake, or distort, producing lazy flames, delayed ignition, or flame-sensor lockouts. Swapping in a fresh OEM burner restores a clean, crisp blue flame and reliable ignition.
The OEM B4022700 is stamped and drilled to Goodman's exact port pattern and venturi geometry, so it matches the manifold gas orifice and delivers the correct air-fuel mixture. Generic burners can alter the flame footprint, leading to hot spots on the heat exchanger and premature cracking. For a safe, on-spec flame, use the genuine burner.
Moderate (3 of 5). Shut off gas and electrical power, remove the burner box cover, disconnect the igniter and flame sensor as needed, and slide the burner off its mounting slot. Install the replacement in the same orientation, then verify ignition and flame carryover across all burners. Because this is a gas component, homeowners uncomfortable working near gas connections should have a licensed HVAC technician perform the swap and check for leaks.
Genuine Goodman OEM fit for the ADSS800603AXAC. In stock and ready to ship.