Description
Overview:
This piston ring is a genuine Stihl replacement part for maintaining engine compression on selected handheld machines. Made from durable steel and sized 40 x 1.2 mm, it forms a tight seal between the piston and cylinder to help retain power, reduce blow-by, and support clean running. It is suitable for Stihl trimmers, brushcutters, edgers, pole pruners, hedge trimmers and Kombi engines, including the FS 100 and FS 100 R. Using the correct ring prevents loss of performance and difficult starting caused by wear. Supplied to OEM specification under MPN 4180 034 3000, it offers a precise fit on compatible models and is a reliable choice when refreshing a top end after scoring, wear, or routine overhaul. Genuine Stihl part.
Key Features:
- Genuine Stihl OEM part for assured compatibility and quality
- 40 x 1.2 mm specification for correct fit and sealing
- Helps restore compression, power, starting and idle quality
- Durable steel construction for heat and wear resistance
- Precision-made ring geometry for consistent sealing performance
- Supports fuel efficiency and emissions by reducing blow-by
- Suitable for a wide range of FS, FC, HT, HL and KM series machines
- Straightforward replacement during piston/cylinder service with standard tools
- OEM reference: 4180 034 3000
Typical Applications:
Used when rebuilding or servicing the top end of compatible Stihl engines after loss of compression, hard starting, high fuel use, visible ring wear, or cylinder scoring. Ideal for routine maintenance of professional and domestic trimmers, brushcutters, edgers, pole pruners, hedge trimmers and Kombi engines to keep performance and reliability consistent.
Also known as:
Piston sealing ring, compression ring, engine ring, cylinder ring, top ring. Common terms used during two-stroke and 4-MIX engine maintenance to describe the component that seals the piston to the cylinder wall.
Fits Models:
FC 100, FC 110, FC 111, FC100, FC110, FC111, FS 100, FS 100 R, FS 100 RX, FS 110, FS 110 R, FS 110 RX, FS 110 X, FS 111, FS 111 R, FS 111 RX, FS100, FS100R, FS100RX, FS110, FS110R, FS110RX, FS110X, FS111, FS111R, FS111RX, FT 100, FT100, HL 100, HL 100 K, HL100, HL100K, HT 100, HT 101, HT 102, HT 103, HT 73, HT100, HT101, HT102, HT103, HT73, KM 100, KM 100 R, KM 110 R, KM 111 R, KM100, KM100R, KM110R, KM111R
Alternate Part Numbers:
4180-034-3000, 41800343000
Product Specifications
| L&S Part No. | 4180 034 3000 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 41800343000 |
| Unit of Sale | 1 |
| Applications | FC 100, FC 110, FC 111, FC100, FC110, FC111, FS 100, FS 100 R, FS 100 RX, FS 110, FS 110 R, FS 110 RX, FS 110 X, FS 111, FS 111 R, FS 111 RX, FS100, FS100R, FS100RX, FS110, FS110R, FS110RX, FS110X, FS111, FS111R, FS111RX, FT 100, FT100, HL 100, HL 100 K, HL100, HL100K, HT 100, HT 101, HT 102, HT 103, HT 73, HT100, HT101, HT102, HT103, HT73, KM 100, KM 100 R, KM 110 R, KM 111 R, KM100, KM100R, KM110R, KM111R |
| Machine Type | Brushcutters, Trimmers, Pole Pruners, Edging Trowel |
| Fits Brands | Stihl |
| Fits Models | FS100, FS110 | FS111, FS111R, FS111RX | HT73 | HT101 | HT102, HT103 | KM100, KM100R, KM110R | KM111R Engines | FC 100 | FC 111 | HL100, HL100K |
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