Description
Overview:
This Trigger Interlock is a genuine Stihl safety component for petrol chainsaws, designed to prevent unintended throttle engagement until the interlock is pressed. It helps avoid accidental activation during starting, carrying, or repositioning the saw. Manufactured from a tough, impact‐resistant polymer in a black finish, it is engineered for long service life under outdoor conditions. The part is a direct replacement for worn or broken interlocks on Stihl machines and maintains original handling and safety characteristics. Suitable for professional arborists, landscapers, and DIY users alike, it fits selected mid-range Stihl chainsaws such as the MS231 and MS241C. Genuine Stihl part, Manufacturer Part Number (MPN): 1143 182 0800.
Key Features:
- Genuine Stihl part for correct fit and reliable operation
- Prevents accidental throttle activation to support safe handling
- Durable, high-strength polymer construction for everyday site use
- Maintains OEM ergonomics and trigger feel
- Designed for quick, straightforward replacement with standard hand tools
- Stable pivoting action for consistent lockout performance
- Resistant to oils, fuel splash, and outdoor temperatures
- Supports routine maintenance compliance on professional fleets
Typical Applications:
Replacement safety interlock for Stihl chainsaws used in tree work, forestry, grounds maintenance, landscaping, firewood cutting, and farm tasks. Ideal when the original lockout is cracked, worn, sticky, or missing, restoring the throttle lockout function and helping meet workshop safety checks before felling, snedding, pruning, or logging.
Also known as:
Throttle interlock, throttle lockout lever, trigger safety, safety lever, lockout lever, trigger lockout, throttle safety, safety trigger.
Fits Models:
MS 231, MS 231 C, MS 241 C, MS 251, MS 251 C, MS231, MS231C, MS241C, MS251, MS251C
Alternate Part Numbers:
1143-182-0800, 11431820800
Product Specifications
| L&S Part No. | 1143 182 0800 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11431820800 |
| Unit of Sale | 1 |
| Applications | MS 231, MS 231 C, MS 241 C, MS 251, MS 251 C, MS231, MS231C, MS241C, MS251, MS251C |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Fits Models | MS231, MS251 | MS241C |
