{"product_id":"liftmaster-041b3869-3a-belt-drive-trolley-kit","title":"LiftMaster 041B3869-3A Belt Drive Trolley Kit","description":"\u003cp\u003eThe \u003cstrong\u003eLiftMaster 041B3869-3A Belt Drive Trolley Kit\u003c\/strong\u003e is a genuine replacement trolley assembly designed for use with select LiftMaster and Chamberlain belt drive garage door openers. The trolley connects the opener carriage to the garage door arm, allowing the motor to open and close the door smoothly along the rail.\u003c\/p\u003e\n\n\u003cp\u003eThis replacement kit is used when the original trolley becomes worn, damaged, or fails to properly engage the belt drive system. Installing a new trolley helps restore proper door movement and reliable opener operation.\u003c\/p\u003e\n\n\u003cp\u003eAlways verify your garage door opener model and replacement parts diagram before ordering to ensure compatibility.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eGenuine LiftMaster replacement part\u003c\/li\u003e\n\u003cli\u003eReplacement trolley for belt drive garage door openers\u003c\/li\u003e\n\u003cli\u003eConnects the garage door arm to the opener rail carriage\u003c\/li\u003e\n\u003cli\u003eRestores smooth door operation when the original trolley is worn or damaged\u003c\/li\u003e\n\u003cli\u003eDesigned for select LiftMaster and Chamberlain belt drive opener systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePart Details\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 041B3869-3A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso Known As:\u003c\/strong\u003e 41B3869, 41B3869-1, 41B3869-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e LiftMaster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Belt drive garage door opener trolley assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Garage Door Opener Models\u003c\/h3\u003e\n\n\u003cp\u003eCompatible with LiftMaster garage door opener models including: 8155WMC, 8355, 8355-267, 8355W, 84501MC, 84504RMC, 8550WLB, and 87504R-267MC.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\n\u003cp\u003eDisconnect power to the garage door opener before performing service or replacing internal components. Refer to the opener installation manual or replacement parts diagram to confirm correct part compatibility prior to installation.\u003c\/p\u003e\n","brand":"Liftmaster","offers":[{"title":"Default Title","offer_id":44186759921747,"sku":"LM-041B3869-3A","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1499\/9402\/files\/LM-041B3869-3A-4.jpg?v=1774038038","url":"https:\/\/www.expressgaragedoors.com\/products\/liftmaster-041b3869-3a-belt-drive-trolley-kit","provider":"Express Garage Doors","version":"1.0","type":"link"}