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The B4022700 is a genuine OEM 3-inch in-shot gas burner for the Goodman/Amana AMS80453AXA gas furnace and compatible 80% AFUE models. Each in-shot burner directs a precise gas/air mixture into its corresponding heat-exchanger tube for clean, quiet ignition and an even blue flame. Over time burners collect rust, scale, and spider webs that cause delayed ignition, roll-out, noisy "whoosh" light-off, and yellow-tipping flames — replacing worn or corroded burners restores safe, efficient combustion.
The genuine OEM B4022700 is manufactured to Goodman's exact venturi diameter, port pattern, and alignment tab so flame geometry matches the heat exchanger and ignition source. Generic burners can shift the flame, causing sooting or delayed ignition. Because burners are a combustion component, we recommend OEM and replacing the full set for consistent flame.
Moderate (3/5). Requires removing the burner assembly, aligning the burner over the orifice, and verifying flame carryover and ignition after install. Plan 30–45 minutes and shut off power and gas. A combustion check after service is recommended.