Description
Overview:
This genuine Stihl gasket (part no. 4242 129 0901 / 42421290901) is a small but vital sealing component for Stihl HS46-series petrol hedgetrimmers. Made from durable, fuel- and heat‐resistant gasket material, it creates a reliable seal between mating engine components to prevent air, fuel, or oil leaks. Good sealing maintains correct mixture, consistent performance, and protects against premature wear. Designed for a precise fit on the HS 46 and HS 46 C, it supports stable running, easier starting, and efficient trimming. As an OEM part from Stihl, it matches the original specification for thickness, port alignment, and hole spacing, helping you restore factory-standard performance during routine servicing or repairs. A straightforward replacement for worn or damaged gaskets, it keeps your hedge trimmer working smoothly and extends service life.
Key Features:
- Genuine Stihl OEM part for assured compatibility and performance
- Exact fit for HS46-series platforms to maintain correct sealing surfaces
- Helps prevent air, fuel, and oil leaks that reduce engine efficiency
- Supports smooth idling, reliable starting, and consistent power delivery
- Fuel- and heat‐resistant construction suited to small petrol engines
- Stable seal under vibration and temperature changes during regular use
- Simple to fit during routine service with basic hand tools
- Matches original thickness and port geometry for proper alignment
- Ideal preventative replacement when rebuilding or troubleshooting leaks
- Part number: 4242 129 0901 (also written 42421290901)
Typical Applications:
Used when servicing or repairing Stihl HS46-series petrol hedgetrimmers to restore a tight seal in the engine intake or related assemblies. Suitable for fixing hard starting, erratic idle, lean running, or visible seepage at a gasket joint. Common in routine maintenance by landscapers, gardeners, grounds teams, and DIY users to keep equipment reliable through the cutting season.
Also known as:
Hedge trimmer gasket, sealing gasket, engine gasket, intake gasket, carburettor gasket, mounting gasket, gasket seal, gasket sheet, packing gasket for small engines, Stihl HS46 series gasket.
Fits Models:
HS 46, HS 46 C, HS 56, HS 56 C
Product Specifications
| L&S Part No. | 4242 129 0901 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42421290901 |
| Unit of Sale | 1 |
| Machine Type | Petrol Hedgetrimmers |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl OEM part ensures compatibility with HS46-series - Designed for precise fit on HS 46 and HS 46 C models - Prevents air, fuel, and oil leaks for engine efficiency - Fuel- and heat-resistant material withstands engine conditions - Matches original thickness and port geometry for proper alignment |
| Fits Models | HS 46, HS46 C | HS56 |
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