Description
This Stihl FS55 gear head is an aftermarket replacement for earlier FS55 brushcutters fitted with the old-type 4140-series gearbox. It replaces the complete lower gearbox assembly that transfers power from the drive shaft to the cutting attachment.
Compatibility:
- Stihl FS55 with the old-type gear head
- Generally fitted to earlier, pre-2014 machines
OEM reference:
- 4140 640 0110
- 41406400110
Product details:
- Product type: complete gear head or gearbox
- Brand: Winzor
- Material: metal
- Application: petrol brushcutter or strimmer
- Condition: new aftermarket replacement part
Stihl FS55 machines were produced with different gear-head designs. The manufacturing year should only be used as a guide. Before ordering, check that the original gearbox carries the 4140 640 0110 reference and compare its shaft connection, casing shape and mounting points with the product photographs.












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