Worm Gear for Stihl 064 066 MS660 1122 640 7100 1122 640 7105 1122 640 3205

Product Overview

Key Features & Performance

• Precision-cut gear teeth for smooth power transmission
• Manufactured from hardened steel for long wear life
• Direct replacement for worn or broken worm gears
• Ensures proper chain oiler function when installed correctly
• OEM equivalent design for easy installation

Fitment & Compatibility

• Stihl 064 chainsaw
• Stihl 066 chainsaw
• Stihl MS660 chainsaw

Common Uses

• Replacement worm gear in Stihl 064, 066, and MS660 chainsaws
• Used in the drive mechanism to transfer motion from crankshaft
• Essential for chainsaw chain oil pump operation
• Common repair part during chainsaw engine rebuilds

Technical Specifications

• Part Number(s): 1122 640 7100, 1122 640 7105, 1122 640 3205

Frequently Asked Questions

Q: Is this worm gear an OEM Stihl part? A: No, this is an aftermarket replacement part designed to meet OEM specifications.

Q: Will this fit my Stihl MS660 with serial number X? A: Compatibility is verified for MS660 models; however, always confirm your existing part number matches one listed.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.