{"product_id":"oem-lennox-wire-harness-33m57","title":"OEM Lennox Wire Harness — 33M57","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e33M57\u003c\/strong\u003e wire harness is the pre-assembled wiring bundle that routes power and low-voltage control signals between the control board, blower, ignition components, and safety switches in your Lennox system. Made to original factory specifications, it uses the exact connectors, wire gauges, and terminal arrangement your unit requires for a seamless, plug-and-play installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Harness problems often show up as intermittent faults, components that won't energize, nuisance error codes, or a system that starts and stops erratically. Heat-hardened insulation, corroded pins, chafing against sheet metal, and connectors loosened by vibration are the usual reasons a \u003cstrong\u003e33M57\u003c\/strong\u003e harness needs to be replaced.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Substitute harnesses with incorrect connectors or undersized wire can create voltage drops and resistance heating that damage costly control boards and motors. The OEM Lennox \u003cstrong\u003e33M57\u003c\/strong\u003e mates with factory-keyed plugs for a correct connection every time, handling the proper current load and eliminating splice-related failure points. Bring back safe, reliable operation with the harness built specifically for your Lennox equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081141535091,"sku":"LNX-33M57","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-wiring-harness-multipin-LNX-33M57.jpg?v=1783764148","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-wire-harness-33m57","provider":"National HVAC Parts","version":"1.0","type":"link"}