Heavy Duty Gearbox Assembly Replacement Kit For Weed Eater Trimmers With Metal Head Includes Gear Head Rider Plate Thrust Washer Thrust Plate Collar Nuts And Screws Replaces OEM 4180 640 0114 41806400114 Fits FS56R FS70R FS90R FS91R FS94R
✔️ Includes gear head, rider plate, thrust washer, thrust plate, and 5 screws
Designed for weed eater gear head upgrades with compatibility across Stihl models; this complete kit provides all necessary parts for a fast, ready-to-use replacement and reliable performance.
✅ 10 teeth, 1 inch (25.4 mm) operating rod diameter, square shaft
✅ Aluminum construction keeps weight light and rugged
✅ Replaces OEM 4180 640 0114 (41806400114) with direct swap
✅ Includes rider plate, thrust washer, thrust plate, 3 collar nuts, and 5 fixing screws
✅ Works with trimmer gearbox grease for FS110R and similar setups
💡 What is a gear head replacement kit used for in weed eater maintenance? This handy upgrade helps restore performance by replacing worn parts and coordinating with the gear box for smooth operation. - Transfers torque from drive shaft to the cutting head - Improves durability with aluminum gear head and rust-resistant hardware - Easy, tool-light installation using included parts
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