Description
Overview:
This genuine Stihl piston ring is a circular steel sealing ring sized 48 mm diameter x 1.2 mm thickness, designed to restore and maintain compression in two-stroke engines. It fits selected Stihl backpack blowers and mistblowers, as well as certain chainsaws, and is ideal for routine top-end servicing or rebuilds. Precision-made to OEM specifications (Stihl 1125 034 3001), it helps the cylinder and piston form a reliable gas-tight seal for efficient combustion and smooth running. Suitable for demanding professional or domestic use, it supports consistent performance and easier starting in tools such as the BR350 and BR430. The robust, dark grey steel construction offers dependable wear resistance under high temperature and high RPM conditions.
Key Features:
- Genuine Stihl OEM part for assured compatibility and fitment
- 48 mm diameter x 1.2 mm thickness to match factory specification
- Restores lost compression for improved power, throttle response, and starting
- Helps reduce blow-by for consistent performance and fuel efficiency
- Durable steel ring with controlled spring tension for a reliable cylinder seal
- Precision-ground edges for smooth operation and reduced friction
- Suitable for Stihl blowers, sprayers, and selected chainsaws listed below
- Practical choice during piston/cylinder replacement or decoke service
- Supports engine longevity when used with correct lubrication and maintenance
- OEM reference: 1125 034 3001 for easy identification
Typical Applications:
Used during engine overhauls, top-end refreshes, or when compression tests show weak results. Common in maintenance of landscaping and groundskeeping equipment, including backpack blowers and mistblowers operating in dusty or heavy-duty environments. Also relevant when addressing hard starting, reduced power, or after cylinder deglazing/honing.
Also known as:
Compression ring, cylinder ring, top piston ring, engine sealing ring, 2-stroke piston ring, power unit ring.
Fits Models:
034, 036, 036QS, BR350, BR430, BR450, BR450C, MS340, MS360, MS360C, SR 430, SR 430-Z, SR 440, SR 450, SR 450-Z, SR430, SR430-Z, SR430Z, SR440, SR450, SR450-Z, SR450Z
Alternate Part Numbers:
1125-034-3001, 11250343001
Product Specifications
| L&S Part No. | 1125 034 3001 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11250343001 |
| Unit of Sale | 1 |
| Applications | 034, 036, 036QS, BR350, BR430, BR450, BR450C, MS340, MS360, MS360C, SR 430, SR 430-Z, SR 440, SR 450, SR 450-Z, SR430, SR430-Z, SR430Z, SR440, SR450, SR450-Z, SR450Z |
| Machine Type | Backpack Blowers, Mist Blowers, Chainsaws |
| Fits Brands | Stihl |
| Fits Models | MS340 | MS360, MS360C | BR350, BR430, BR450 | 034 | 036 | 036QS | SR 430, SR 450 | SR 430-Z | SR 440 | SR 450-Z | BR430 | BR450, BR450C |
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