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The Goodman B4022700 3-Inch In-Shot Burner is a genuine OEM burner tube for the AMEH800603BXAA gas furnace. In-shot burners inject the gas/air mixture into the heat exchanger for combustion; over time they can rust, warp, or clog with debris, leading to uneven flame, delayed ignition, noisy startup, or a tripping flame sensor. Replacing a worn burner restores a clean, blue, evenly-distributed flame and reliable heating.
This genuine OEM Goodman burner matches the factory venturi geometry and mounting slot, ensuring correct gas/air mixing and flame carry-over between burners. Generic burners can alter the flame pattern, causing incomplete combustion or flame-sensor faults. For a combustion component, OEM accuracy matters for both performance and safety.
Moderate — Requires removing the burner assembly bracket to slide the burner off its manifold orifice. Plan 30–45 minutes. Shut off gas and power first, and check flame quality after reassembly. When replacing one burner, inspecting the full set is recommended.