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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner designed for the AMV80905CXBB gas furnace and matching Goodman/Amana 80% AFUE units. In-shot burners deliver the gas/air mixture into each heat-exchanger tube for clean, quiet ignition and even heat distribution. Replacing a rusted, clogged, or misfiring burner restores proper flame characteristics and safe furnace operation.
The OEM B4022700 is stamped and formed to Goodman's exact venturi geometry, ensuring the correct flame carryover and burner-to-orifice alignment. Generic burners may alter the air/fuel mixture and cause sooting or delayed ignition. OEM guarantees factory flame performance.
Moderate (2/5) — Requires removing the burner assembly and aligning the burner over its orifice. Basic hand tools needed. Verify flame appearance after install.
Shut off gas and power before servicing. When in doubt, use a licensed HVAC professional.