Description
Overview:
This genuine Stihl gasket (OEM 1125 129 0500) is a flat, fuel- and oil‐resistant fibre composite seal used to prevent air, fuel and exhaust leaks at critical joints on small two‐stroke engines. It helps maintain proper compression and mixture control, supporting clean running and reliable starting. Designed for long service with Stihl handheld machines, it is a direct fit for high‐use tools such as the Stihl 034 chainsaw and SR 430 mistblower. Precision cut for accurate alignment, it sits between mating surfaces to create a tight, durable seal without excessive sealant. Suitable for workshop rebuilds and routine maintenance, it provides the correct fit and thickness to meet factory tolerances, preserving engine efficiency and protecting components from wear.
Key Features:
- Genuine Stihl part for assured fit and compatibility
- Fuel- and oil‐resistant fibre composite for dependable sealing
- Helps maintain compression and prevents vacuum and fuel leaks
- Cut to OEM tolerances for correct port alignment and airflow
- Stable under heat and vibration in two‐stroke applications
- Clean edges and mounting holes for straightforward installation
- Supports performance, starting and idle stability
- Suitable for professional, hire and domestic service environments
Typical Applications:
Used when servicing or rebuilding engines on Stihl chainsaws, backpack blowers and mistblowers. Ideal when refitting components after cleaning, replacing worn seals, or resolving air leaks that affect tuning and performance. Common during carburettor, intake or crankcase-related work to restore a reliable seal and protect the engine.
Also known as:
Engine gasket, sealing gasket, gasket seal, paper gasket, fibre gasket, intake gasket, exhaust/cylinder interface gasket, blower gasket.
Fits Models:
034, BR 350, BR 430, BR 450, BR 450 C, MS 340, SR 430, SR 430-Z, SR 440, SR 450, SR 450-Z
Alternate Part Numbers:
1125 129 0500, 11251290500
Product Specifications
| L&S Part No. | 1125 129 0500 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11251290500 |
| Unit of Sale | 1 |
| Applications | 034, BR 350, BR 430, BR 450, BR 450 C, BR350, BR430, BR450, BR450C, MS 340, MS340, SR 430, SR 430-Z, SR 440, SR 450, SR 450-Z, SR430, SR430-Z, SR430Z, SR440, SR450, SR450-Z, SR450Z |
| Machine Type | Backpack Blowers, Chainsaws, Mist Blowers |
| Fits Brands | Stihl |
| Fits Models | MS340 | BR350, BR430, BR450 | 034 | SR 430, SR 450 | SR 430-Z | SR 440 | SR 450-Z | BR430 | BR450, BR450C |
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