Description
Overview:
This Chain Sprocket Cover is a genuine Stihl replacement part for the MS 231 and MS 251 series of petrol chainsaws. It encloses and protects the drive sprocket and clutch area from chips, dirt, and impact, helping to keep the chain running smoothly and the bar securely clamped. Built to Stihl's OEM standards, it offers a hard‐wearing, stable housing with a clean grey finish that suits everyday and heavy use. The precise fit minimises vibration and misalignment, supporting reliable cutting performance and reducing unnecessary wear. Supplied under Stihl part number 1143 640 1701, it is intended as a direct like‐for‐like replacement for a damaged or worn cover. Suitable for trade, estate, and domestic users who need dependable protection and consistent fitment.
Key Features:
- Genuine Stihl OEM part (1143 640 1701) for assured compatibility and fit
- Designed specifically for the MS 231 and MS 251 families, including C variants
- Robust, hard‐wearing construction resists impacts, abrasion, and heat from normal use
- Shields the sprocket and clutch area from debris to help maintain smooth drive
- Stable mounting points support correct bar clamping and chain alignment
- Direct replacement; straightforward to fit with standard hand tools
- Built to Stihl's quality standards for consistent performance and longevity
- Helps reduce downtime and follow‐up maintenance caused by damaged covers
- Suitable for professional landscaping, grounds care, and regular DIY cutting work
Typical Applications:
Replacing a cracked, warped, or missing sprocket cover on Stihl MS 231 or MS 251 chainsaws used for firewood cutting, pruning, property maintenance, groundskeeping, and light forestry work. Useful after chain derailments or impact damage to restore correct chain guidance, safe operation, and protection of the drive components.
Also known as:
Clutch cover, side cover, sprocket guard, chain cover, chaincase cover, sprocket shield. These terms refer to the protective side housing that covers the drive sprocket and clutch area and provides the mounting interface for the guide bar.
Fits Models:
MS 231, MS 231 C, MS 251, MS 251 C, MS231, MS231C, MS251, MS251C
Product Specifications
| L&S Part No. | 1143 640 1701 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11436401701 |
| Unit of Sale | 1 |
| Applications | MS 231, MS 231 C, MS 251, MS 251 C, MS231, MS231C, MS251, MS251C |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Fits Models | MS231, MS251 |
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