{"product_id":"4137-640-0100-gear-box-for-stihl-fr450-fr460-fr480-fr85-fr85-t-fs100","title":"4137 640 0100 Gear Box For Stihl FR450 FR460 FR480 FR85 FR85 T FS100","description":"\u003cstrong\u003eThis Gear Box is a replacement gearbox compatible with Stihl FR450, FR460, FR480, FR85, FR85 T, and FS100 trimmers and matches OEM Part# 4137 640 0100.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis gear box is a direct replacement gear assembly designed for select Stihl brushcutters and trimmers. It transfers engine power to the cutting head, enabling efficient vegetation management for landscaping and agricultural use. The gear box is built to restore original performance in compatible Stihl models.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrecision-engineered gears for smooth power transfer and reduced vibration\u003c\/li\u003e\n\u003cli\u003eFactory-matched OEM specifications for direct bolt-on installation\u003c\/li\u003e\n\u003cli\u003eDurable metal housing resists impact and wear in heavy-duty use\u003c\/li\u003e\n\u003cli\u003eIntegrated grease fittings allow easy lubrication maintenance\u003c\/li\u003e\n\u003cli\u003eLightweight design minimizes operator fatigue during extended operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eStihl FR450\u003c\/li\u003e\n\u003cli\u003eStihl FR460\u003c\/li\u003e\n\u003cli\u003eStihl FR480\u003c\/li\u003e\n\u003cli\u003eStihl FR85\u003c\/li\u003e\n\u003cli\u003eStihl FR85 T\u003c\/li\u003e\n\u003cli\u003eStihl FS100\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplacing worn or damaged gear boxes on Stihl brushcutters\u003c\/li\u003e\n\u003cli\u003eRestoring cutting performance in commercial landscaping operations\u003c\/li\u003e\n\u003cli\u003eMaintaining trail clearing and roadside vegetation equipment\u003c\/li\u003e\n\u003cli\u003eRepairing farm and ranch trimming machinery\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 4137 640 0100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Gear Box Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Brand:\u003c\/strong\u003e Stihl\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal Housing with Steel Gears\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this gear box fit my Stihl FR460?\u003cstrong\u003e A:\u003c\/strong\u003e Yes, this gear box is compatible with the Stihl FR460 as listed in the fitment section. Always verify your model and serial number before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this gear box come pre-filled with grease?\u003cstrong\u003e A:\u003c\/strong\u003e The gear box is typically dry and requires lubrication before use. Apply a lithium-based grease to the gears through the fill plug for proper operation.\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":53721937117457,"sku":"ZZ3C00654","price":52.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/s-l1600_a46ef0c6-9773-4ae7-b2f4-dcc77d08c6bb.jpg?v=1782824293","url":"https:\/\/www.duraforce.com\/products\/4137-640-0100-gear-box-for-stihl-fr450-fr460-fr480-fr85-fr85-t-fs100","provider":"DURAFORCE","version":"1.0","type":"link"}