Description
Overview:
This Genuine Stihl gasket (MPN 4180 129 0901) is a precision sealing component for Stihl 4-MIX and two-stroke handheld machines, including the KM100 and KM100R Kombi engines. Made from durable, heat- and fuel-resistant gasket material in a dark grey finish, it seals mating engine surfaces to prevent air, fuel, and oil leaks. A correct seal helps maintain compression, stable idle, and reliable starting, which protects performance and reduces wear. Designed to match factory specifications, it fits selected Stihl brushcutters, Kombi engines, hedge trimmers, blowers, pole pruners, and earth augers that share the same engine platform. As a Genuine Part, it delivers the fit and longevity expected for both professional and domestic users who need dependable day‐to‐day operation.
Key Features:
- Genuine Stihl OEM part for assured compatibility and service life
- Manufacturer Part Number: 4180 129 0901
- Accurate fit to prevent air, fuel, and oil leaks at critical joints
- Supports correct compression and smooth running under load
- Stable under heat, vibration, and petrol/ethanol blends used in the UK
- Clean, precise bolt holes and profile for straightforward fitting
- Helps cure hard starting, erratic idle, and loss of power caused by leaks
- Suitable for routine servicing, rebuilds, or replacing damaged seals
- Compatible across a wide range of Stihl 4-MIX platform tools listed below
- Maintains efficiency, reducing the risk of premature component wear
Typical Applications:
Used during engine maintenance or repair when reassembling crankcase, cylinder, or cover joints on Stihl handheld machines. Ideal when addressing air leaks, replacing worn or torn gaskets, or after cleaning, decarbonising, or component replacement work on brushcutters, Kombi engines, blowers, hedge trimmers, pole pruners, and augers in professional landscaping and home garden use.
Also known as:
Engine gasket, sealing gasket, motor gasket, Kombi engine seal, crankcase seal, cylinder joint gasket, service gasket, replacement engine seal.
Fits Models:
BR 500, BR 550, BR 600, BR 700, BR500, BR550, BR600, BR700, BT 130, BT 130 Z, BT130, BT130Z, FC 100, FC 110, FC 90, FC 95, FC100, FC110, FC90, FC95, FR 130 T, FR130T, FS 100, FS 100 R, FS 100 RX, FS 110, FS 110 R, FS 110 RX, FS 110 X, FS 120, FS 130, FS 130 R, FS 200, FS 250, FS 310, FS 83, FS 83 T, FS 87, FS 87 R, FS 90, FS 90 R, FS100, FS100R, FS100RX, FS110, FS110R, FS110RX, FS110X, FS120, FS130, FS130R, FS200, FS250, FS310, FS83, FS83T, FS87, FS87R, FS90, FS90R, FT 100, FT100, HL 100, HL 100 K, HL 90 K, HL 95, HL 95 K, HL100, HL100K, HL90, HL90K, HL95, HL95K, HT 100, HT 101, HT 130, HT 131, HT 73, HT100, HT101, HT130, HT131, HT73, KM 100, KM 100 R, KM 110 R, KM 130, KM 130 R, KM 90, KM 90 R, KM100, KM100R, KM110R, KM130, KM130R, KM90, KM90R, SP 90, SP 90 T, SP90, SP90T
Alternate Part Numbers:
4180-129-0901, 41801290901
Product Specifications
| L&S Part No. | 4180 129 0901 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 41801290901 |
| Unit of Sale | 1 |
| Applications | BR 500, BR 550, BR 600, BR 700, BR500, BR550, BR600, BR700, BT 130, BT 130 Z, BT130, BT130Z, FC 100, FC 110, FC 90, FC 95, FC100, FC110, FC90, FC95, FR 130 T, FR130T, FS 100, FS 100 R, FS 100 RX, FS 110, FS 110 R, FS 110 RX, FS 110 X, FS 120, FS 130, FS 130 R, FS 200, FS 250, FS 310, FS 83, FS 83 T, FS 87, FS 87 R, FS 90, FS 90 R, FS100, FS100R, FS100RX, FS110, FS110R, FS110RX, FS110X, FS120, FS130, FS130R, FS200, FS250, FS310, FS83, FS83T, FS87, FS87R, FS90, FS90R, FT 100, FT100, HL 100, HL 100 K, HL 90 K, HL 95, HL 95 K, HL100, HL100K, HL90, HL90K, HL95, HL95K, HT 100, HT 101, HT 130, HT 131, HT 73, HT100, HT101, HT130, HT131, HT73, KM 100, KM 100 R, KM 110 R, KM 130, KM 130 R, KM 90, KM 90 R, KM100, KM100R, KM110R, KM130, KM130R, KM90, KM90R, SP 90, SP 90 T, SP90, SP90T |
| Machine Type | Backpack Blowers, Brushcutters, Kombi Engines, Pole Pruners |
| Fits Brands | Stihl |
| Fits Models | FS83, FS83T | FS90, FS90R | FS100, FS110 | FS120, FS200, FS250 | FS130, FS130R | FS310 | BR500 | FR130T | HT73 | HT101 | HT130 | HT131 | KM90, KM90R | KM100, KM100R, KM110R | KM130, KM130R | FC 90, 95 | FC 100 | BT 130 | BT 130 Z | HL90K, HL90, HL95K | HL100, HL100K | BR550 | BR600 | BR700 | HL 95, HL 95 K |
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