Description
Overview:
The Chain Sprocket 3/8'' 8T for Stihl is a Genuine Stihl part designed for high performance and long service life on professional petrol chainsaws such as the MS460 and MS341. Made from robust steel, it transfers drive from the clutch to the saw chain, keeping chain speed consistent under load. With a 3/8 inch (9.53 mm) pitch and 8-tooth profile, it maintains correct engagement with standard 3/8 inch chains to minimise wear and maximise cutting efficiency. Precision manufactured to OEM standards (Part No. 1128 640 2005), it offers a precise fit on specified models and helps restore smooth running when a worn sprocket is causing chain chatter, slipping, or accelerated chain wear. A dependable choice for maintenance and overhaul work.
Key Features:
- Genuine Stihl part for assured compatibility and quality
- 3/8 inch (9.53 mm) pitch with 8 teeth for correct chain engagement and smooth power transfer
- Durable steel construction for resistance to wear and impact in heavy-duty use
- OEM reference 1128 640 2005 for straightforward identification
- Helps maintain chain speed and cutting accuracy, reducing chain and bar wear
- Direct replacement; fits as standard on the specified saws with no modifications
- Suitable for professional forestry, landscaping, and site work where reliability matters
- Supports routine maintenance schedules; replace when teeth are worn or hooking is visible
- Compatible with standard 3/8 inch chains used on mid-to-large Stihl saws
- Engineered for stable running, reduced vibration, and consistent performance
Typical Applications:
Ideal for restoring drive performance on working chainsaws used for felling, snedding, bucking, and firewood processing. Suited to arborists, forestry teams, grounds maintenance, and construction site crews who operate Stihl saws daily and need dependable chain drive components.
Also known as:
Drive sprocket, clutch drum sprocket, spur sprocket, chain drive gear, drive gear.
Fits Models:
044, 046, MS341, MS440, MS460
Alternate Part Numbers:
1128-640-2005, 11286402005
