{"product_id":"gear-box-gear-head-fits-stihl-fs400-fs160-fs220-1108-640-3600-4128-640-0101","title":"GEAR BOX GEAR HEAD FITS STIHL FS400 FS160  FS220 1108 640 3600 4128 640 0101","description":"\u003ch2\u003eGear Box Gear Head for Stihl\u003c\/h2\u003e\u003cp\u003eThis gear box gear head is a direct replacement drive component designed to transfer power from the engine to the cutting attachment on compatible Stihl trimmers and brushcutters, referencing OEM cross-reference numbers 1108 640 3600 and 4128 640 0101.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis gear box gear head is a precision-machined drive assembly that converts engine rotation into the high-torque output needed for heavy-duty cutting tasks. It is built for Stihl FS400, FS160, and FS220 models, making it a reliable replacement for worn or damaged original units. The gear head ensures smooth power transfer and long service life in demanding landscaping applications.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eConstructed from hardened steel gears for reduced wear and extended operational life\u003c\/li\u003e\n\u003cli\u003eSealed bearing design protects internal components from debris and moisture\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on fitment for quick installation without modification\u003c\/li\u003e\n\u003cli\u003ePrecision-cut gears minimize vibration and noise during operation\u003c\/li\u003e\n\u003cli\u003eCompatible with standard trimmer heads and brushcutter blades\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Stihl FS400\u003c\/li\u003e\n\u003cli\u003efor Stihl FS160\u003c\/li\u003e\n\u003cli\u003efor Stihl FS220\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIdeal for replacing worn gear heads on commercial-grade string trimmers\u003c\/li\u003e\n\u003cli\u003eCommonly used in brush clearing and heavy weed cutting applications\u003c\/li\u003e\n\u003cli\u003eSuitable for both residential lawn care and professional landscaping crews\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1108 640 3600, 4128 640 0101\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Brands\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Stihl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHardened steel gears with sealed bearings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this gear head fit my Stihl FS400? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, this gear box gear head is designed to fit Stihl FS400, FS160, and FS220 models, but always verify your unit's serial number for exact compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this include the output shaft or just the gear housing? \u003cstrong\u003eA:\u003c\/strong\u003e This is the complete gear head assembly, including the internal gears and bearings, ready for direct installation onto your trimmer.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":45216595378262,"sku":"ZZ3C00649","price":52.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_012de6ee-9056-4cca-9a32-860bf7ef4e5e.jpg?v=1782824053","url":"https:\/\/www.solidspare.com\/products\/gear-box-gear-head-fits-stihl-fs400-fs160-fs220-1108-640-3600-4128-640-0101","provider":"Solid Spare","version":"1.0","type":"link"}