Description
Overview:
The Chain Brake Tension Spring is a genuine replacement part for Stihl chainsaws, engineered to keep the chain brake system working safely and reliably. Manufactured from durable spring-grade steel, it provides the correct return force to engage and reset the brake mechanism after activation. This spring replaces Stihl OEM part number 1123 162 7900 and is suitable for popular models such as the MS170 and MS180. Fitting a fresh spring helps restore crisp brake action, supports safe stopping of the chain in kickback events, and maintains overall tool integrity during routine use. It is suitable for professional users and DIY owners who want dependable performance from their saw's primary safety system.
Key Features:
- Genuine Part for assured compatibility and performance with Stihl machines
- Direct replacement for Stihl OEM 1123 162 7900
- Durable metal construction designed for frequent on/off brake cycles
- Maintains correct brake return tension for consistent safety function
- Helps restore positive chain brake feel on worn or tired assemblies
- Straightforward to fit with basic workshop tools, minimising downtime
- Suitable for routine maintenance or repair after damage or fatigue
- Stable performance under typical cutting vibrations and temperature changes
Typical Applications:
Used when the chain brake becomes sluggish, weak, or fails to reset reliably. Ideal during routine service, after heavy use, or following an impact that disturbs the brake linkage. Helps ensure the brake band engages promptly, supporting safe operation in domestic cutting, landscaping, arborist work, and site tasks.
Also known as:
Chain brake spring, brake return spring, chainsaw brake tension spring, chain stop spring, brake band tension spring, chain brake return spring.
Fits Models:
017, 017C, 018, 018C, 019T, MS170, MS170 2-Mix, MS170C, MS180, MS180 2-Mix, MS180C, MS180C 2-Mix, MS190T, MS191T
Alternate Part Numbers:
1123 162 7900, 11231627900
Product Specifications
| L&S Part No. | 355 578 |
|---|---|
| Part Type | Genuine Part |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Key Features | - Genuine replacement for Stihl OEM 1123 162 7900 - Compatible with MS170, MS180, and other models - Made from durable spring-grade steel - Maintains correct brake return tension - Easy installation with basic workshop tools |
| Fits Models | 017 | 018 |
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