Description
Overview:
The Piston Ring 40 mm x 1.2 mm for Stihl MS 201 and MS 201 TC chainsaws is a Genuine Stihl part designed to restore and maintain correct cylinder compression in 2‐stroke engines. Made from OEM‐grade, wear‐resistant materials, it seals the gap between piston and cylinder to help deliver stable power, efficient combustion, and reliable starting. This ring has a 40 mm diameter (1.57 in) and a 1.2 mm thickness (0.05 in), ensuring a precise fit on the specified Stihl top end. It is suitable for routine servicing or top‐end rebuilds when a ring has worn, lost tension, or been damaged. Choosing a genuine component supports long service life and compatibility with Stihl MS 201‐series chainsaws and selected FS brushcutters.
Key Features:
- Genuine Stihl OEM component for assured fit and performance
- Correct dimensions: 40 mm diameter (1.57 in) and 1.2 mm thickness (0.05 in)
- Helps restore compression for easier starting, stronger pull, and cleaner running
- Engineered for high temperatures and friction found in 2‐stroke applications
- Direct replacement for worn or damaged rings on compatible Stihl engines
- Smooth integration with OEM piston and cylinder tolerances
- Supports fuel efficiency by reducing blow‐by and maintaining sealing
- Suitable for routine maintenance or full top‐end refresh
- Backed by Stihl's quality standards for durability and reliability
- Easy to fit with standard workshop practices and correct orientation
Typical Applications:
Used during chainsaw and brushcutter maintenance to address loss of compression, poor starting, reduced power, or excessive exhaust fumes. Ideal when honing or replacing a cylinder/piston set, after a seizure, or as preventative service at overhaul intervals. Common in professional arborist saws like the MS 201 series and in grounds maintenance brushcutters where dependable daily performance is required.
Also known as:
Engine ring, cylinder ring, compression ring, piston sealing ring. These terms describe the same component that seals the combustion chamber around the piston to maintain pressure and reduce blow‐by in small 2‐stroke engines.
Fits Models:
FS 240, FS 260, FS 360 C, FS 410 C, MS 201, MS 201 C, MS 201 T, MS 201 TC
Alternate Part Numbers:
4147-034-3003, 41470343003
Product Specifications
| L&S Part No. | 4147 034 3003 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 41470343003 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws, Brushcutters |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl OEM part ensures correct fit and performance - Dimensions: 40 mm diameter, 1.2 mm thickness - Restores compression for easier starting and cleaner running - Suitable for Stihl MS 201 and FS brushcutters - Made from wear-resistant materials for durability |
| Fits Models | MS201, MS201C, MS201T, MS201TC | FS240, FS260 | FS360C FS410C | FS361C |
