Description
Overview:
The Stihl Piston Ring 41 x 1.5 mm is a genuine OEM component for restoring a correct seal between the piston and cylinder in Stihl backpack blowers and mistblowers. Made from high‐grade steel for long service life, it helps maintain engine compression and reliable starting, power, and fuel efficiency. Sized precisely at 41 x 1.5 mm (1.61 x 0.06 inches), it is designed for a correct fit on compatible Stihl machines such as the SR 340 and SR 420. Fitting a new ring is a routine part of a top‐end refresh when performance drops due to wear. As a Genuine Stihl part, it is built to the manufacturer's specification for dependable operation in demanding commercial and domestic use.
Key Features:
- Genuine Stihl OEM part for assured compatibility and performance
- Precise size: 41 x 1.5 mm (1.61 x 0.06 inches) for correct ring groove fit
- High‐grade steel construction for wear resistance and stable sealing
- Helps restore compression, power, and starting reliability
- Supports longer engine life by reducing blow‐by and oil contamination
- Stable performance under high temperatures common in blower use
- Straightforward to fit during routine top‐end maintenance
- Suitable for a wide range of Stihl BR and SR models listed below
Typical Applications:
Used when engines are hard to start, down on power, or after scoring/wear in the top end. Ideal during a piston/cylinder replacement, decoke, or scheduled overhaul on Stihl backpack blowers and sprayers. Helps maintain consistent output for landscaping, grounds care, agricultural spraying, and contractor use where long run times and dependable performance are essential.
Also known as:
Piston sealing ring, top ring, 41 mm bore ring, cylinder sealing ring, motor ring. Common search terms include Stihl piston ring 41 mm and piston ring for SR/BR series.
Fits Models:
SR 320, SR 340, SR 400, SR 420, BR 320, BR 320 L, BR 340, BR 340 L, BR 380, BR 400, BR 420, BR 420 C
Alternate Part Numbers:
4203-034-3000, 42030343000
Product Specifications
| L&S Part No. | 4203 034 3000 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42030343000 |
| Unit of Sale | 1 |
| Applications | 400, BR 320, BR 320 L, BR 340, BR 340 L, BR 380, BR 400, BR 420, BR 420 C, BR320, BR320L, BR340, BR340L, BR380, BR400, BR420, BR420C, SR 320, SR 340, SR 400, SR 420, SR320, SR340, SR400, SR420 |
| Machine Type | Backpack Blowers, Mist Blowers |
| Fits Brands | Stihl |
| Fits Models | BR320, BR400 | SR 320, 400 | SR 340, SR 420 |
