Description
Overview:
This is a genuine Stihl intake manifold (OEM 1139 140 2500) for petrol chainsaws. It forms the airtight connection between the cylinder and carburettor, keeping the fuel-air mix stable and the engine running reliably. Made from fuel- and heat-resistant elastomer, the manifold helps prevent vacuum leaks that cause hard starting, erratic idling, or lean running. It is a direct-fit replacement for worn or cracked manifolds on Stihl models, especially the MS 211 and MS 211 C, restoring consistent performance with minimal fuss. Designed to match original specifications, it supports proper engine breathing, throttle response, and long service life when maintained correctly.
Key Features:
- Genuine Stihl part for assured compatibility and quality
- OEM reference 1139 140 2500 for accurate identification
- Fuel- and heat-resistant elastomer for durability in tough use
- Maintains an airtight intake path to prevent air leaks and lean running
- Helps restore stable idle, clean acceleration, and easier starting
- Direct replacement with factory geometry for a proper fit
- Supports efficient engine operation and power output
- Suitable for professional and domestic chainsaw maintenance
Typical Applications:
Replacement of a split, hardened, or leaking intake manifold on Stihl chainsaws used for logging, firewood processing, arborist work, landscaping, farm and estate maintenance, and general DIY. Ideal when diagnosing symptoms such as surging, high idle, poor starting, or loss of power due to intake air leaks.
Also known as:
Intake boot, carburettor boot, inlet manifold, carburettor intake pipe, inlet boot, intake connector, carb mounting boot, carburettor sleeve.
Fits Models:
MS 171, MS 171 C, MS 181, MS 181 C, MS 211, MS 211 C
Alternate Part Numbers:
1139-140-2500, 11391402500
Product Specifications
| L&S Part No. | 1139 140 2500 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11391402500 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part ensures compatibility with chainsaws - OEM reference 1139 140 2500 for precise identification - Fuel- and heat-resistant elastomer prevents vacuum leaks - Direct replacement for Stihl MS 211 and MS 211 C - Maintains stable idle and clean acceleration |
| Fits Models | MS171, MS171C | MS181, MS181C | MS211, MS211C |
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