Features: 100% new high quality gearbox assembly. Professional manufacturing, stable performance, high reliability and practicality. Fine workmanship can directly replace broken or old parts. Replace OEM parts: 4137 640 0100 This product is suitable for the Stihl FS120 FS200 FS250. Specifications: Condition: 100% Brand New Material: Metal Replace OEM parts: 4137 640 0100 Fitment: Fit for Stihl FS44, FS65, FS72, FS74, FS75, FS76, FS80, FS80R, FS83, FS83T, FS85, FS85R, FS85T, FS85RX, FR85T, FR85, FS87, FS87R, FS90, FS90R, FS100, FS100R, FS100X, FS100RX, FT100, FS120, FS120R, FR130T, FS130R, FS200, FS200R, FR220, FS240C, FS240RC, FS250, FS250R, FS260C, FS260RC, FR350, FS460C, FS460RC, FR480, FR480 Size: Length: approx. 17.5cm / 6.9in Head diameter: approx. 6.7cm / 2.6in Package list: 1 * Gearbox Assembly Features 100% new high-quality gearbox assembly: Experience the reliability and durability of a brand new gearbox assembly for your Stihl FS120 FS200 FS250. Professional manufacturing for superior performance: Trust in the expertise of our professional manufacturing process, ensuring stable performance and practicality. Direct replacement for broken or old parts: Save time and effort with the fine workmanship of our gearbox assembly, designed to seamlessly replace your worn-out parts. OEM parts replacement: Replace your gearbox assembly with confidence, knowing that it is a perfect fit for your Stihl FS120 FS200 FS250. Compatible with OEM parts: 4137 640 0100. Enhance the performance of your Stihl trimmer: Upgrade your gear head assembly with our reliable and high-quality gearbox assembly, designed specifically for the Stihl FS120 FS200 FS250.