General description Upgrade your Stihl chainsaw with this high-quality 3/8 6T Clutch Bell and Clutch assembly. Designed to fit a range of Stihl models, this replacement part ensures optimal performance and durability for your chainsaw. Technical specifications Compatible with Stihl models: MS170, MS180, MS210, MS230, MS250, 017, 018, 021, 023, 025 Replaces part numbers: 1123 640 2003, 1123 640 2005, 1123 160 2050 Compatibility and accessories Includes: 1x Sprocket 1x Clutch 1x Needle Bearing 1x Clutch Cleaner 1x E-Clip 1x Worm Gear 1x Oil Filter