Description
Overview:
This Genuine Stihl baffle (part number 1139 121 6900) is an internal exhaust component for Stihl petrol chainsaws. Made from durable metal with a protective finish, it sits within the muffler to channel exhaust gases, helping to maintain the correct back pressure and reduce noise. By stabilising gas flow, it supports smooth idling, clean acceleration, and overall engine efficiency. It is designed specifically for Stihl models in the MS 181 and MS 211 families, including the MS 211 and MS 211 C. If the original baffle has corroded, cracked, or gone missing, replacing it with this OEM part restores the exhaust system to its intended performance and helps keep the saw running reliably in everyday cutting tasks.
Key Features:
- Genuine Stihl OEM component (1139 121 6900) for accurate fit and performance
- Durable pressed metal with a protective coating to withstand heat and vibration
- Directs exhaust flow to maintain back pressure and engine efficiency
- Helps reduce exhaust noise for a quieter-running saw
- Restores performance where the original baffle is damaged or missing
- Precisely formed mounting points for a straightforward fit in the factory muffler
- Supports stable idle and smooth throttle response under load
- Suitable for regular professional use and DIY maintenance
- Installs with basic hand tools following standard workshop practice
- Designed for long service life when used with sound gaskets and fasteners
Typical Applications:
Used during muffler repairs or overhauls on Stihl chainsaws when addressing excessive noise, rattling, exhaust leaks, loss of power, or poor throttle response. Common in routine maintenance for saws used in arborist work, landscaping, forestry, firewood processing, farming, and estate upkeep, ensuring the exhaust system functions as intended across daily cutting tasks.
Also known as:
Silencer plate, exhaust divider, muffler insert, muffler partition plate, exhaust inner plate, exhaust flow plate. These terms refer to the internal plate within the muffler assembly that guides exhaust gases to support correct running characteristics and noise control in compatible Stihl chainsaws.
Fits Models:
MS 181, MS 181 C, MS 211, MS 211 C, MS181, MS181C, MS211, MS211C
Alternate Part Numbers:
1139-121-6900, 11391216900
Product Specifications
| L&S Part No. | 1139 121 6900 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11391216900 |
| Unit of Sale | 1 |
| Applications | MS 181, MS 181 C, MS 211, MS 211 C, MS181, MS181C, MS211, MS211C |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Fits Models | MS181, MS181C | MS211, MS211C |
