9645 945 3155 – O-ring 7.66 mm O. D. x 1.78 mm
Genuine STIHL replacement part to help keep your equipment running reliably. Ideal for maintenance and repairs where OEM quality and correct fitment matter.
- OEM STIHL part number: 9645 945 3155
- High-quality genuine STIHL spare part (not an aftermarket copy)
- Designed to meet STIHL factory specifications for performance and durability
- Perfect for workshops, contractors and DIY users maintaining STIHL equipment
Compatibility note: Please check your STIHL model and parts diagram before ordering. If you're unsure this is the correct part, contact us with your model details and we can help confirm.