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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner engineered for the AMH80403AXBA gas furnace. The in-shot burner delivers a precisely shaped gas jet into the heat exchanger tube, producing the clean, stable blue flame your furnace needs for efficient, safe heating. Rusted, clogged, or misaligned burners cause uneven ignition, delayed light-off, sooting, and rollout — replacing a worn burner restores reliable startup and complete combustion.
The genuine OEM B4022700 is manufactured to Goodman's exact port geometry and orifice alignment, ensuring the flame carries over correctly from burner to burner. Generic burners can misdirect the flame and upset the carryover, risking incomplete combustion and safety lockouts. For proper flame characteristics, OEM is strongly recommended.
Requires accessing the burner assembly. Shut off gas and power, remove the burner rack or slide the individual burner off its mounting slot, align the new burner with the orifice and carryover ports, and secure it. A basic hand tool may be needed. Estimated time: 20-30 minutes. Verify orifice-to-burner alignment before firing.