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The Goodman B1401012 hot surface igniter is the OEM ignition component for the GDT090-4 gas furnace and other compatible Goodman/Amana models. When your furnace fails to light on a call for heat, the igniter is the most common culprit — a cracked or worn element can no longer reach the temperature needed to ignite the gas at the burners.
Our OEM B1401012 is the exact factory component, engineered to the original mounting bracket, wire lead length, and heat curve for a true plug-and-play replacement. Aftermarket universal igniters can fit but often require bracket adapters or lead splicing and may have a shorter service life. For a furnace you depend on through winter, the OEM part is the reliable choice.
Easy (2/5). Replacement typically takes 15–20 minutes: shut off power and gas, remove the burner access panel, unplug the igniter harness, remove the mounting screw, and swap in the new unit. Handle the ceramic element only by its base — skin oils and touching the element shorten its life. If you are not comfortable working around gas components, contact a licensed HVAC technician.
Always confirm compatibility with your exact model and serial before ordering.