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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner for the AMES800603AXAA gas furnace. Each in-shot burner directs a precisely shaped gas-air flame into one tube of the heat exchanger; a matched set fires the furnace evenly for clean, efficient combustion and full-rated heat output.
Burners that are rusted, cracked, or clogged with scale and debris cause uneven flames, delayed ignition, flame roll-out, and sooting. Replacing damaged burners with the correct OEM part restores a crisp blue flame and reliable light-off. When servicing one burner it is good practice to inspect the full set.
OEM vs. Generic: The B4022700 is manufactured to the exact venturi bore, port pattern, and mounting geometry Goodman engineered for this furnace, so flame shape and orientation match the factory design. Generic burners can alter the flame and interfere with the flame sensor and ignition timing. For combustion parts, OEM is strongly recommended.
Installation difficulty: Moderate (3/5). Requires removing the burner-box cover, disengaging the manifold/orifice, sliding out the old burner, and seating the new one with correct alignment to the igniter and sensor. Roughly 30–45 minutes. Always shut off gas and power and verify flame quality after service.