{"product_id":"oem-goodman-door-interlock-switch-w-wires-for-gsm080-4-b1370820","title":"OEM Goodman Door Interlock Switch w\/ Wires for GSM080-4 — B1370820","description":"\u003cp\u003eThe genuine \u003cstrong\u003eGoodman B1370820 Blower Door Switch\u003c\/strong\u003e is the factory interlock safety for the \u003cstrong\u003eGSM080-4\u003c\/strong\u003e gas furnace and compatible GMS\/GSM 80 series models. Mounted at the blower compartment, it cuts power to the furnace whenever the access panel is removed, preventing the unit from operating with the door open. This part ships \u003cstrong\u003ewith the wire harness already attached\u003c\/strong\u003e, simplifying replacement.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Normally-open blower-door interlock switch\u003c\/li\u003e\n\u003cli\u003eSupplied with factory wire leads \/ harness\u003c\/li\u003e\n\u003cli\u003ePlunger actuation (closes when door is installed)\u003c\/li\u003e\n\u003cli\u003eMounting: Blower compartment wall bracket\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370820\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GSM080-4 and related 80 series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause this switch arrives \u003cstrong\u003epre-wired with the correct connector and lead lengths\u003c\/strong\u003e, the OEM B1370820 is a true plug-and-play replacement — no crimping or splicing required. Generic door switches are often sold bare, forcing you to reuse aging wires and increasing the risk of a loose connection on a safety circuit. The OEM harness restores the factory fit exactly.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2 of 5).\u003c\/strong\u003e Disconnect power, unplug the harness at the control board or splice points, remove the switch bracket screws, and mount the new switch and route its wires along the original path. Confirm the plunger is depressed when the door is seated. About a 15–20 minute repair.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058180931955,"sku":"GOODMAN-12937","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-door-interlock-switch-w-wires-for-gsm080-4-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}