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Restore clean, even combustion in your Goodman/Amana gas furnace with the genuine B4022700 3-inch in-shot burner. This is the factory-specified burner for the AMH80403ANBA furnace and matches the original in port geometry, flame characteristics, and mounting so ignition stays crisp and quiet. Worn or corroded burners cause rough lighting, delayed ignition, and uneven heat — replacing with the correct OEM part keeps your heat exchanger firing safely.
An OEM Goodman burner guarantees the exact port pattern and flame throw the furnace was engineered around, preserving proper flame-sensor contact and heat-exchanger warranty coverage. Generic burners may light unevenly, drift out of the sensing flame, or trip flame-sensor faults. For a combustion component, the small savings on a generic part is not worth the reliability risk.
Moderate — 30–45 minutes. Shut off gas and power, remove the burner assembly, swap each burner, and verify flame alignment on restart. A licensed HVAC technician is recommended for any gas-fired work.
Compatible with the AMH80403ANBA and closely related Goodman/Amana 80% furnace platforms. Confirm your model and quantity before ordering.