OEM Goodman 3 inch In-Shot Burner for AMS80603AXAA Furnace — B4022700

The Goodman B4022700 is a genuine OEM 3-inch in-shot burner engineered for the AMS80603AXAA gas furnace and compatible Goodman/Amana 80% AFUE platforms. In-shot burners deliver a precise fuel-air jet into the heat exchanger for clean, quiet, efficient combustion. Rust, scale, or spider/insect blockage inside a burner causes rough ignition, delayed light-off, sooting, and roll-out faults — replacing worn burners restores smooth, even flame carryover across the manifold.

• Part number: B4022700
• Type: In-shot gas burner
• Size: 3 inch
• Fits: Goodman & Amana AMS80603AXAA and compatible 80% gas furnaces
• Function: Meters fuel-air mixture into the heat exchanger
• Sold as: Single burner (order one per burner position)

OEM vs. Generic: The OEM B4022700 matches Goodman's exact orifice alignment, venturi geometry, and flame characteristics, so light-off and carryover are correct out of the box. Generic burners can misalign with the manifold spuds and produce uneven or noisy flames. For safe, reliable combustion, use the OEM burner and replace as a matched set when possible.

Install difficulty: Moderate (3/5). Shut off gas and power, remove the burner cover and manifold, slide out the old burner, and seat the new one over the correct orifice with proper carryover alignment. Typically 30–45 minutes. Because this is a gas combustion component, a qualified HVAC technician should verify flame, gas pressure, and roll-out safety after installation.