Stihl made a change to the flywheel side of their latest generation of crankcases, causing a change in the crank seal size, which is now 15x22x4. This is the replacement crank seal needed to fit the latest generation crankcase.
SERVICE NOTE: Only fits the latest generation crankcases. Seal size is 15x22x4.
- Stihl 9640-003-1560
- Size: 15mm ID, 22mm OD, 4mm Height
- Fits flywheel side
- Only fits the latest generation of Stihl crankcases
- Factory genuine Stihl part
