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The Goodman B4022700 In-Shot Burner is a genuine OEM 3-inch single burner for the AMS80453AXAA gas furnace. In-shot burners fire a precise gas/air jet into each heat-exchanger tube for clean, efficient combustion. Over time burners corrode, clog with rust or debris, or develop uneven flame patterns—replacing them restores proper ignition, quiet operation, and full heating output.
The OEM B4022700 is manufactured to exact factory orifice and port geometry for the correct flame profile and BTU delivery. Our Generic equivalent provides comparable in-shot performance at a lower price—ideal when replacing a full burner set on a budget.
Difficulty: Moderate (3/5). Allow 30–60 minutes. Turn off gas and power, remove the burner box cover, slide out the old burner, and index the new one to the manifold orifice and heat-exchanger tube. Inspect flame color after startup—a steady blue flame confirms correct seating. Recommended for confident DIYers or a licensed HVAC pro.