{"product_id":"gear-box-gear-head-for-stihl-fs400-fs160-fs220-1108-640-3600-4128-0101","title":"Gear Box Gear Head For STIHL FS400 FS160 FS220 1108 640 3600 4128 0101","description":"\u003cstrong\u003eThis Gear Box Gear Head is a replacement gear head assembly compatible with Stihl FS400, FS160, and FS220 trimmers and matches OEM Part# 1108 640 3600 and 4128 640 0101.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis gear box gear head is a direct replacement for the drive system on Stihl FS series trimmers. It transfers engine power to the cutting head, enabling efficient trimming and edging. Designed for Stihl FS400, FS160, and FS220 models, this gear head restores reliable performance for homeowners and landscapers.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined gears for smooth power transfer and reduced vibration\u003c\/li\u003e\n\u003cli\u003eDirect OEM replacement fit for Stihl FS400, FS160, and FS220 trimmers\u003c\/li\u003e\n\u003cli\u003eDurable metal housing resists wear from heavy use\u003c\/li\u003e\n\u003cli\u003eIncludes output shaft and bearing assembly for complete installation\u003c\/li\u003e\n\u003cli\u003eMatches OEM part numbers 1108 640 3600 and 4128 640 0101 for guaranteed compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eStihl FS400\u003c\/li\u003e\n\u003cli\u003eStihl FS160\u003c\/li\u003e\n\u003cli\u003eStihl FS220\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplacing worn or damaged gear heads on Stihl FS series trimmers\u003c\/li\u003e\n\u003cli\u003eRepairing edging and trimming equipment in commercial landscaping\u003c\/li\u003e\n\u003cli\u003eRestoring power transfer in residential lawn care tools\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 1108 640 3600, 4128 640 0101\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Hardened steel gears with aluminum housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e Stihl FS400, FS160, FS220\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this gear head fit my Stihl FS250?\u003cstrong\u003e A:\u003c\/strong\u003e This gear head is specifically designed for FS400, FS160, and FS220 models; it may not fit the FS250 without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this include the mounting hardware?\u003cstrong\u003e A:\u003c\/strong\u003e The gear head comes as a complete assembly with shaft and bearing, but mounting bolts and gaskets are sold separately.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eProduct appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":53721936789777,"sku":"ZZ3C00649","price":52.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/s-l1600_b1e9d762-0d15-4b39-afa2-bdf72c377109.jpg?v=1782824284","url":"https:\/\/www.duraforce.com\/products\/gear-box-gear-head-for-stihl-fs400-fs160-fs220-1108-640-3600-4128-0101","provider":"DURAFORCE","version":"1.0","type":"link"}