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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner engineered for the VMS80403AXAA 80% AFUE gas furnace and other compatible Goodman/Amana in-shot burner assemblies. Each burner directs a metered stream of gas and primary air into the heat exchanger tube for clean, quiet, and efficient combustion. Over years of firing cycles, burners can warp, rust, or develop misaligned flame patterns that cause delayed ignition, roll-out, or short cycling — replacing them restores a crisp, blue flame and reliable heat.
The OEM B4022700 is manufactured to Goodman's exact port spacing, air-shutter geometry, and heat-exchanger alignment, ensuring a factory-correct flame and warranty-safe repair. Generic burners are lower cost but can vary in port size and length, risking uneven ignition and improper flame carryover between tubes. For combustion components we recommend OEM.
Requires shutting off gas and power, removing the burner box, and re-seating the burner over the manifold orifice with correct alignment to the flame sensor and igniter. Best performed by an HVAC technician; verify flame pattern and test for gas leaks after install.