Description
Overview:
This Cylinder with Piston (38 mm) is a genuine Stihl replacement part for the top end of compact petrol chainsaws, engineered to restore compression and smooth running. Built from durable, heat‐resistant metal components with precise machining, it helps the engine seal correctly, transfer heat efficiently, and deliver reliable power. Designed specifically for Stihl MS 181 and MS 181 C models, it provides the correct bore and geometry for a direct, dependable fit. With a 38 mm diameter (approximately 1.5 inches), it matches factory specification to maintain performance and service life. Supplied as a cylinder and piston assembly, it is suitable for routine maintenance or a top‐end rebuild when wear, scoring, or loss of compression has occurred. Genuine Stihl OEM part number: 1139 020 1203.
Key Features:
- Genuine Stihl OEM part for correct fit and reliability (1139 020 1203)
- 38 mm bore (approx. 1.5 inches) matched to factory specification for proper sealing and performance
- Robust metal construction designed for efficient heat dissipation and long service life
- Restores lost compression to improve power delivery, throttle response, and starting consistency
- Precision tolerances help reduce premature wear when used with correct oil mix and maintenance
- Direct replacement for worn or damaged original parts on MS 181 and MS 181 C models
- Suitable for workshop or on‐site repairs; compatible with standard service procedures and tools
- Helps maintain cutting efficiency and engine reliability under regular professional or domestic use
Typical Applications:
Used to replace a worn, scored, or seized top end on Stihl MS 181 series chainsaws after heavy use, poor lubrication, or dust ingress. Ideal for restoring performance on machines that are hard to start, down on power, or consuming more fuel due to low compression. Suits repairs and preventative maintenance for arborists, landscapers, grounds teams, and home users preparing a saw for seasonal work.
Also known as:
Cylinder kit, piston and cylinder assembly, top‐end kit, barrel and piston, pot and piston, engine cylinder assembly, piston assembly for chainsaw, chainsaw cylinder set.
Fits Models:
MS 181, MS 181 C, MS181, MS181C
Product Specifications
| L&S Part No. | 1139 020 1203 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11390201203 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl OEM part number: 1139 020 1203 - 38 mm bore matches factory specification - Compatible with Stihl MS 181 and MS 181 C - Durable metal construction for heat dissipation - Restores compression for improved power delivery |
| Fits Models | MS181, MS181C |
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