Description
Overview:
This Genuine Stihl gasket (part number 4140 129 0904) is a precision-cut sealing component for light-duty Stihl petrol tools, including brushcutters and hedge trimmers. Made from durable composite gasket material, it sits between mating surfaces to maintain an airtight, fuel-tight seal, helping to prevent air, fuel, or oil leaks that can affect engine performance. It is designed for use on popular trimmers such as the FS 38 and FS 45, among others. Correct sealing supports smooth starting, steady idling, and reliable power delivery, while reducing the risk of unmetered air entering the system. Built to Stihl's OEM standards, this gasket fits accurately, beds in well under fasteners, and withstands heat and vibration in normal service, making it a dependable replacement during routine maintenance or repairs.
Key Features:
- Genuine Stihl OEM part for assured fit and compatibility
- Helps prevent leaks and loss of performance by sealing mating surfaces
- Durable composite construction resists heat, fuel, and vibration
- Clean, accurate cut for reliable compression under fasteners
- Supports smooth starting and consistent running
- Maintains proper airflow and fuel delivery characteristics
- Suitable for routine servicing and component refits
- Straightforward to fit with basic hand tools, reducing downtime
Typical Applications:
Used during servicing or reassembly of Stihl brushcutters and hedge trimmers to restore a secure seal between components. Ideal when refitting parts after cleaning, replacing worn seals, or resolving hard starting, erratic idle, or minor leakage issues. Helps keep engines running smoothly in gardening, landscaping, and light grounds maintenance.
Also known as:
Seal, packing, flange gasket, spacer gasket, sealing washer, engine gasket, carb/airbox gasket (general terms). Commonly referred to as a sealing component used between flat faces to prevent air, fuel, or oil leaks.
Fits Models:
FS 38, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, FS 55, FS 55 C, FS 55 R, HS 45, HS 52
Product Specifications
| L&S Part No. | 4140 129 0904 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 41401290904 |
| Unit of Sale | 1 |
| Machine Type | Brushcutters, Hedgetrimmers |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl OEM part ensures correct fit and compatibility - Composite material resists heat, fuel, and vibration - Precision-cut for reliable compression under fasteners - Suitable for FS 38, FS 45, FS 55, HS 45 models - Prevents air, fuel, and oil leaks for optimal performance |
| Fits Models | FS38, FS45, FS46 | FS55, FS55C, FS55R | HS45 | HS52 |
