Product Name
Gear Box Head
Parts Number
4128 640 0101 4128 640 0125
Fits On Stihl
FS160 FS180 FS220 FS240 FS280 FS290 FS300 FS310
Fits For Stihl
FS311 FS350 FS360 FS380 FS400 FS450 FS480
Drive Shaft Spline
6.3mm Square
Collar Nut
M12 x 1.5MM Left Hand Thread
Warning
It is not compatible with Gear Head 4119 640 0107