Description
Overview:
This Piston Ring 40 x 1.5 mm is a Genuine Stihl part designed to restore and maintain correct cylinder sealing in two‐stroke engines used in clearing saws and brushcutters. Built from durable, wear‐resistant metal, it helps preserve compression, power delivery, and reliable starting while reducing blow‐by and oil consumption. It is sized for a 40 mm bore (1.57 in) with a 1.5 mm ring thickness (0.06 in), giving a precise fit where specified. Ideal for professional and domestic maintenance alike, it suits a wide range of models, including the Stihl FS220 and FS280. Correct piston ring condition is vital for engine efficiency, so replacing a worn ring can noticeably improve performance, throttle response, and fuel economy in regular site and landscape work.
Key Features:
- Genuine Stihl replacement ring for dependable fit and performance
- 40 mm diameter x 1.5 mm thickness (1.57 in x 0.06 in) for specified 40 mm cylinders
- Helps restore compression, power, and starting consistency
- Durable construction to withstand high temperatures and continuous use
- Precision finish for stable sealing and reduced blow‐by
- Suitable for heavy‐duty environments such as forestry, grounds care, and contracting
- Straightforward like‐for‐like replacement when servicing top‐end components
- Compatible with a broad range of Stihl clearing saws, brushcutters, and selected chainsaws
Typical Applications:
Used during top‐end overhauls or routine servicing to replace worn rings causing low compression, difficult starting, loss of power, or increased fuel use. Common in maintaining clearing saws and brushcutters for landscaping, estate management, forestry, and amenities work, where reliable daily operation is essential.
Also known as:
Compression ring, piston compression ring, cylinder ring, engine ring, 40 mm piston ring, 40 x 1.5 mm ring for two‐stroke small engines.
Fits Models:
009, 012, 020, FR350, FR450, FR480, FR480C, FS120, FS120R, FS200, FS200R, FS202, FS220, FS220K, FS250, FS250R, FS280, FS280K, FS290, FS300, FS350, FS380, FT250, HT250, KA120, KA120R, KA250 Attachment, MS200, MS200T
Alternate Part Numbers:
4119-034-3003, 41190343003
Product Specifications
| L&S Part No. | 4119 034 3003 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11140343001 |
| Unit of Sale | 1 |
| Applications | 009, 012, 020, FR350, FR450, FR480, FR480C, FS120, FS120R, FS200, FS200R, FS202, FS220, FS220K, FS250, FS250R, FS280, FS280K, FS290, FS300, FS350, FS380, FT250, HT250, KA120, KA120R, KA250 Attachment, MS200, MS200T |
| Machine Type | Clearing Saws, Brushcutters |
| Fits Brands | Stihl |
| Fits Models | MS200, MS200T | 009 | FS120, FS200, FS250 | FS220, FS280, FS290 | FS300, FS350, FS380 | FS200, FS202 | FR350, FR450, FR480, FR480C | KA120, KA120R, KA250 Attachment |


