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The Goodman B4022700 is a genuine OEM 3-inch in-shot burner for the ADSS800403AXAB gas furnace and compatible Goodman/Amana models. Each in-shot burner meters gas and primary air into its heat-exchanger tube to produce a clean, stable blue flame. Rust, scale, or a distorted burner port causes rollout, delayed ignition, sooting, or flame-sensing faults — replacing a damaged burner restores proper, safe combustion.
The OEM B4022700 is manufactured to Goodman's exact port size, venturi, and mounting alignment so the flame characteristics match the furnace's design — critical for safe combustion and correct heat-exchanger temperatures. Generic burners can alter the air/gas mix and flame pattern. On a combustion component, OEM is strongly recommended. Replace all burners as a matched set when one is damaged.
Moderate (3/5). Requires shutting off gas and power, removing the burner assembly/manifold, transferring or replacing the burner in the correct position, and verifying flame quality on relight. Recommended for an experienced DIYer or a licensed HVAC technician.