{"product_id":"oem-goodman-hot-surface-ignitor-for-wfm18070s4bxcc-20165703s","title":"OEM Goodman Hot Surface Ignitor for WFM18070S4BXCC — 20165703S","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20165703S Hot Surface Ignitor\u003c\/strong\u003e is a genuine OEM ignition component for the \u003cstrong\u003eWFM18070S4BXCC\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. The hot surface ignitor (HSI) glows to a high temperature on a call for heat and ignites the burner gas — it replaces the older standing-pilot system for faster, more efficient lightoff. HSIs are wear items: the element becomes brittle over thousands of heating cycles and eventually cracks, producing a furnace that runs the inducer and clicks the valve but never lights.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 20165703S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e WFM18070S4BXCC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Hot surface ignitor (HSI)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElement:\u003c\/strong\u003e High-temperature silicon-based igniter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Gas furnace burner ignition\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is the factory ignitor matched to your furnace's mounting bracket, connector, and voltage\/resistance profile. Universal HSI kits exist, but mismatched resistance or bracket geometry can lead to slow lightoff, incomplete glow, or premature failure. Given how fragile these elements are, starting with the correct OEM 20165703S avoids repeat service calls.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eTypically a one- or two-screw job, 15–20 minutes. Cut power, unplug the ignitor harness, remove the mounting screws, and lift the old ignitor out of the burner assembly. \u003cstrong\u003eNever touch the ceramic or element with bare fingers\u003c\/strong\u003e — skin oils create hot spots that shorten its life. Seat the new ignitor, secure it, and reconnect.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058225955187,"sku":"GOODMAN-14093","price":47.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-hot-surface-ignitor-for-wfm18070s4bxcc-20165703s","provider":"National HVAC Parts","version":"1.0","type":"link"}