Description
Overview:
The Piston Ring for Husqvarna chainsaws is a genuine Husqvarna part that restores correct cylinder sealing and compression in two‐stroke engines. Made from a durable steel alloy, it withstands high temperatures and sustained RPM. The ring is engineered to match original dimensions and tension for a reliable fit in models such as the 246 and 345, helping maintain strong starting, consistent power, and efficient fuel use. Use it to replace worn or damaged rings and to prevent blow‐by that can reduce performance. This ring is a direct like‐for‐like replacement for OEM No. 503 28 90 10 and is suitable for routine servicing or full top‐end rebuilds. Brand: Husqvarna. Genuine Part.
Key Features:
- Genuine Husqvarna part for assured fit and performance
- Direct replacement for OEM No. 503 28 90 10
- Durable, heat‐resistant steel construction for long service life
- Restores optimal compression, power, and throttle response
- Helps reduce blow‐by for cleaner combustion and efficiency
- Precision profile for smooth cylinder wall contact
- Consistent sealing for easier cold starts
- Designed for straightforward like‐for‐like fitting
- Suitable for preventative maintenance and top‐end rebuilds
- Compatible with a wide range of Husqvarna mid‐size saws including 246 and 345
Typical Applications:
Replacement during engine maintenance when compression is low, after cylinder or piston wear, or as part of a top‐end overhaul. Used on professional and domestic chainsaws in forestry, landscaping, arborist work, and firewood cutting to maintain reliable performance and fuel efficiency.
Also known as:
Cylinder ring, engine ring, compression ring, piston sealing ring.
Fits Models:
246, 250PS, 250R, 250RX, 252RX, 340, 340E, 345, 345E, 350, 351, 356BF, 356BT, 40, 42, 45, 49, 51, PS50
Alternate Part Numbers:
503 28 90-10, 503289010
Product Specifications
| L&S Part No. | 503 28 90 10 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503289010 |
| Unit of Sale | 1 |
| Applications | 246, 250PS, 250R, 250RX, 252RX, 340, 340E, 345, 345E, 350, 351, 356BF, 356BT, 40, 42, 45, 49, 51, PS50 |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 340 | 250PS | 246 | PS50 | 250PS | 340E | 345 | 345E | 350 | 351 | 40 | 42 | 45 | 49 | 51 | 250R | 250RX | 252RX | 356BF | 356BT |
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