Description
Overview:
This chain sprocket is a Genuine Stihl part designed for tools that use the 1/4 inch (6.35 mm) Picco chain system. Made from durable steel, it drives the chain smoothly and accurately, helping to maintain clean cuts and reduce wear on the bar and chain. It is engineered for Stihl's compact cordless range, including the MSA 140 C and MSA 140 C-BQ, and selected HTA pole pruners that run 1/4 inch (6.35 mm) Picco chain. As a direct OEM replacement (part number 4857 642 1202), it restores correct chain engagement when a worn sprocket causes noise, vibration, or chain skip. Suitable for regular maintenance, it supports reliable performance for both professional users and DIY owners who depend on consistent, efficient cutting.
Key Features:
- Genuine Stihl part for assured compatibility and correct chain pitch
- 1/4 inch (6.35 mm) Picco sprocket for precise chain engagement
- Durable steel construction for long service life
- Smooth power transfer helps reduce vibration and chain skip
- Helps prevent premature wear to bar and chain drive links
- Straightforward replacement with standard workshop tools
- Optimised for Stihl cordless saws and pole pruners listed below
- OEM reference 4857 642 1202 for easy identification
Typical Applications:
Used during routine servicing or when the chain shows drive-link burrs, skips, or runs roughly. Suitable for pruning, light cutting, grounds maintenance, and property care with Stihl battery chainsaws and pole pruners that specify a 1/4 inch (6.35 mm) Picco drive. Replacing a worn sprocket helps maintain cutting speed, accuracy, and safety.
Also known as:
Drive sprocket, chain drive cog, chain gear, Picco sprocket, chain drive gear, powerhead drive gear.
Fits Models:
HTA 65, HTA 66, HTA 85, HTA 86, MSA 140 C, MSA 140 C-BQ, MSA 140 C-BQ Powerhead
Alternate Part Numbers:
4857-642-1202, 48576421202
Product Specifications
| L&S Part No. | 4857 642 1202 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 48576421202 |
| Unit of Sale | 1 |
| Applications | HTA 65, HTA 66, HTA 85, HTA 86, HTA65, HTA66, HTA85, HTA86, MSA 140 C, MSA 140 C-BQ, MSA 140 C-BQ Powerhead, MSA140 C, MSA140C, MSA140C-BQ |
| Machine Type | Chainsaws, Cordless Pole Pruners |
| Fits Brands | Stihl |
| Fits Models | MSA140 C | HTA65 | MSA 140 C-BQ Powerhead | HTA 66 | HTA 85 | HTA 86 |
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