STIHL Genuine Oil Pump Worm Gear – 1122 640 7105

This is a genuine OEM oil pump worm gear (worm drive) designed to transfer rotational drive from the clutch assembly to the chainsaw's oil pump. This critical component ensures a consistent supply of bar and chain oil, helping reduce friction, minimise wear and extend the life of the guide bar and saw chain. Manufactured from durable, wear-resistant polymer, it provides the precise fit and dependable operation expected from genuine STIHL parts. 

Replaces; 1122 640 7100, 1122 647 2400

Fitment

• 066 M
• MS 650 
• MS 660-Magnum
• 064 R
• 064
• 064 RW
• 066 MR