This is a replacement trimmer head compatible with Stihl FS38, FS40, FS45, FS50, FS50 CE, FSE60, FSE71, FSE81 models and Viking TE600, TE700, TE1000. It operates as an AutoCut C 5-2 head with M8 x 1.25 thread, rated for up to 10,000 rpm operation.
The head replaces Stihl part number 4006 710 2105 and provides a direct fit for existing trimmer shafts without modification. It comes complete with one line head and one spring, containing all components needed for installation.
This replacement is ideal for maintaining consistent cutting performance or upgrading to a reliable original-specification head. The M8 x 1.25 thread design ensures secure fastening and stable operation at rated speeds.
Simply verify your model number matches the compatibility list, then install the new head onto your trimmer shaft. Tighten securely before use to ensure safe operation.

















