Description
Overview:
This spur gear is a genuine Stihl component for professional and domestic hedge trimmers, used within the cutter gearbox to transfer drive smoothly to the blades. Precision-machined from robust metal (steel), it is designed to withstand continuous load and resist wear, helping to keep the gearbox running quietly and efficiently. It is an exact-fit service part for popular models such as the Stihl HS81R and HS86R, and carries OEM No. 4237 640 7501 for assured identification. Replacing a worn or damaged gear restores consistent blade movement, reduces vibration, and supports accurate cutting performance. As a genuine Stihl part, it maintains the original specification of your machine and supports long service life when used with clean lubrication and correct maintenance.
Key Features:
- Genuine Stihl part for trusted quality and compatibility
- OEM No. 4237 640 7501 for precise identification and fit
- Durable, machined metal construction for long service life
- Helps restore smooth, low-vibration blade drive
- Stable transmission of power under sustained hedge-cutting loads
- Exact geometry supports correct mesh with mating gears
- Replaces worn or chipped gears to prevent further gearbox damage
- Supports consistent cutting performance and cleaner results
- Straightforward to fit for routine maintenance or repair
- Suitable for a wide range of Stihl HS and HSA hedge trimmers
Typical Applications:
Used during gearbox overhauls or routine servicing to replace a worn drive gear in Stihl hedge trimmers. Ideal when blades hesitate, the gearbox becomes noisy, or visible tooth wear is present. Helps maintain reliable performance in regular garden maintenance, grounds care, and professional hedge shaping where dependable blade drive is essential day after day.
Also known as:
Spur gear wheel, drive gear, gearbox gear, cutter drive gear, transmission gear, reduction gear, hedge trimmer gear, hedge cutter cog, pinion (spur type), drive cog. Commonly referenced during gearbox rebuilds or cutter head repairs when power transfer to the blades needs restoring.
Fits Models:
HS 81 R, HS 81 RC-E, HS 82 R, HS 82 RC-E, HS 86 R, HS 87 R, HS81, HS81R, HS81RC-E, HS81RCE, HS82, HS82R, HS82RC-E, HS82RCE, HS86, HS86R, HS87, HS87R, HSA 130.0 R, HSA 94 R, HSA130.0R, HSA130R, HSA130T, HSA94, HSA94R
Alternate Part Numbers:
4237-640-7501, 42376407501
Product Specifications
| L&S Part No. | 4237 640 7501 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42376407501 |
| Unit of Sale | 1 |
| Applications | HS 81 R, HS 81 RC-E, HS 82 R, HS 82 RC-E, HS 86 R, HS 87 R, HS81, HS81R, HS81RC-E, HS81RCE, HS82, HS82R, HS82RC-E, HS82RCE, HS86, HS86R, HS87, HS87R, HSA 130.0 R, HSA 94 R, HSA130.0R, HSA130R, HSA130T, HSA94, HSA94R |
| Machine Type | Hedgetrimmers |
| Fits Brands | Stihl |
| Fits Models | HS81, HS86 | HS82 | HSA94 | HS87 | HSA130R, HSA130T |
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