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The Goodman B4022700 is an OEM single in-shot burner sized for the GMP050-3 gas furnace. In-shot burners meter and direct the gas/air mixture into the heat exchanger tubes for clean, efficient combustion. Over time burners corrode, rust, or clog with debris and spider webs, causing rough ignition, delayed light-off, yellow flames, sooting, or flame rollout. Replacing worn burners restores crisp blue flames and reliable heat.
Genuine Goodman in-shot burners are stamped to exact orifice-alignment tolerances so the flame lands correctly in each heat-exchanger tube. Generic burners often differ in port pattern or venturi depth, which can shift flame position and trip the flame sensor or rollout switch. OEM guarantees a proper, safe burn.
Easy — 20–40 minutes. Shut off gas and power, remove the burner box cover, slide the old burner off its mounting slot and orifice, and seat the replacement in the same position. Replace all burners together if others show wear. Verify flame quality after restart.