Description
Overview:
This genuine Stihl gasket (part no. 4137 129 0905) is a precision-cut sealing component used in a wide range of Stihl handheld 2‐stroke machines, including KR85 and FR85T. Made from a durable, fuel- and oil‐resistant gasket material, it creates a tight, reliable seal between mating engine or intake components to prevent air, fuel, and exhaust leaks. A correct seal helps maintain stable idling, smooth acceleration, and consistent power, while reducing the risk of hard starting and poor running. Designed to match Stihl's original tolerances, it fits accurately without trimming and restores the intended performance after routine servicing, rebuilds, or repairs. Suitable for professional landscaping, grounds care, and domestic maintenance where dependable sealing is essential.
Key Features:
- Genuine Stihl part for assured compatibility and build quality
- Fuel- and oil‐resistant material for long service life in 2‐stroke applications
- Precise fit to OEM dimensions for leak‐free sealing and stable engine tuning
- Helps prevent air ingress and fuel vapour leaks that cause erratic running
- Supports easy starting, smooth throttle response, and reliable performance
- Clean, flat finish for consistent compression across mating surfaces
- Straightforward to fit during routine maintenance with basic hand tools
- Suitable for multiple Stihl trimmers, brushcutters, hedge trimmers, pole pruners, and kombi engines
Typical Applications:
Used when servicing or rebuilding intake and carburettor joints, insulator blocks, and related housings on Stihl handheld equipment. Ideal after strip‐downs, when replacing worn gaskets, correcting air leaks, or restoring performance following maintenance of brushcutters, hedge trimmers, pole pruners, and kombi tools.
Also known as:
Seal, packing, washer, carburettor gasket, intake gasket, manifold gasket, spacer gasket, mounting gasket. Commonly referenced as an engine sealing gasket for small Stihl 2‐stroke powerheads.
Fits Models:
FC 73, FC 75, FC 85, FC73, FC75, FC85, FH75, FR85, FR85T, FS75, FS80, FS80R, FS85, FS85R, FS85RX, FS85T, HL75, HL75K, HT70, HT70K, HT75, KA85R, KA85R Attachment, KM85, KM85R, KR85, KR85 Attachment, KW 85, KW85, SP80, SP80K, SP81, SP85, SP85K
Alternate Part Numbers:
4137-129-0905, 41371290905
Product Specifications
| L&S Part No. | 4137 129 0905 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 41371290905 |
| Unit of Sale | 1 |
| Applications | FC 73, FC 75, FC 85, FC73, FC75, FC85, FH75, FR85, FR85T, FS75, FS80, FS80R, FS85, FS85R, FS85RX, FS85T, HL75, HL75K, HT70, HT70K, HT75, KA85R, KA85R Attachment, KM85, KM85R, KR85, KR85 Attachment, KW 85, KW85, SP80, SP80K, SP81, SP85, SP85K |
| Machine Type | Backpack Brushcutters, Brushcutters, Clearing Saws, Edging Trowel, Kombi Engines, Kombi Tools, Lawn Edgers, Pole Pruners |
| Fits Brands | Stihl |
| Fits Models | FS75, FS80, FS85 | FR85T, FR85 | HT70, HT70K, HT75 | KM85, KM85R | KA85R Attachment | KR85 Attachment | KW 85 | FC 73 | FC 75 | FC 85 | HL75, HL75K | FH75 | SP 85 |
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