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The Goodman B1401012 is a genuine OEM hot surface burner ignitor for the GMN080-4 gas furnace. On each call for heat, the control board energizes the ignitor until it glows red-hot, lighting the burners before the gas valve opens. Because the element is fragile and cycles thousands of times a season, the ignitor is the single most common furnace failure — symptoms include no heat, the blower running with cold air, or a visibly cracked/broken element. This is an inexpensive, high-impact repair that gets heat back fast.
The OEM B1401012 matches the original element resistance, bracket, and plug so it installs in minutes and reliably ignites the burners. A generic universal ignitor may require adapter brackets and wire splicing, and off-spec elements can be slow to reach temperature or fail prematurely. Given the low price, OEM is the smart, durable choice.
Easy (2/5). Typically 15–20 minutes: cut power, unplug the connector, remove one or two screws, and swap. Never touch the ceramic/silicon element with bare fingers — skin oils cause hot spots and early failure. Handle by the base/bracket only.