STIHL 1144 640 7101 Worm Drive – Genuine Oil Pump Drive Gear for MS 661 Chainsaws

The Genuine STIHL 1144 640 7101 Worm Drive is a critical component of your chainsaw's lubrication system, transferring drive from the clutch assembly to the oil pump. This precision-engineered worm gear ensures a consistent supply of bar and chain oil, helping to protect your guide bar, chain and sprocket from excessive wear. Manufactured from durable, wear-resistant polymer, it is designed to withstand the demands of professional forestry, arborist and firewood applications while providing long-lasting reliability.

Fits model:

• MS 661
• MS 661 C