Gear Box Assy - Stihl

Stihl Gearbox Assy
This is the complete gearbox assy complete with the blade boss washer plates and retaining nut.
OEM Part number: 4137 640 0100
Suits: Stihl FS55, FS55R, FS85, FS85R, FS90, FS90R, FS110, FS110R, FS130, FS130R, KM Line Trimmer Attachment