{"product_id":"oem-goodman-spark-ignition-assembly-for-gux100-5-furnace-b1401003s","title":"OEM Goodman Spark Ignition Assembly for GUX100-5 Furnace — B1401003S","description":"\u003cp\u003eThe Goodman B1401003S is a genuine OEM spark ignition assembly for the Goodman GUX100-5 gas furnace. This ignitor produces the high-voltage spark that lights the burner on each heat call. A worn or cracked spark ignitor is one of the most common reasons a furnace clicks but fails to light, so replacing it restores dependable ignition and consistent heat.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1401003S\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GUX100-5 furnace\u003c\/li\u003e\n\u003cli\u003eType: Direct-spark ignition electrode assembly\u003c\/li\u003e\n\u003cli\u003eFunction: Generates ignition spark at burner\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (genuine OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine Goodman assembly comes with the correct electrode gap, ceramic insulator, and pre-formed mounting bracket, so it seats in the burner box at the exact spark location the control board expects. Generic ignitors often need gap adjustment and can crack under repeated thermal cycling, causing intermittent no-heat faults. For an ignition-critical part, OEM reliability is worth it.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003eModerate (3 of 5). Shut off gas and power, remove the burner-compartment cover, unplug the ignition lead, unbolt the old assembly, and install the new one at the correct gap. A multimeter and basic tools help confirm proper operation. Budget 30–45 minutes; if you're unsure about gas components, use a licensed technician.\u003c\/p\u003e\u003cp\u003eBuilt for the Goodman GUX100-5. Verify your model and serial number before ordering.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058200002931,"sku":"GOODMAN-13387","price":73.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-spark-ignition-assembly-for-gux100-5-furnace-b1401003s","provider":"National HVAC Parts","version":"1.0","type":"link"}