Description
Overview:
This piston ring is a Genuine Husqvarna spare for selected two‐stroke chainsaws, designed to restore and maintain correct cylinder sealing. Built from durable, wear‐resistant metal, it sits in the piston groove to seal the combustion chamber, supporting strong compression, clean combustion, and reliable starting. It is intended for Husqvarna machines such as the 235 and 550XP, giving the right fit and dependable performance when replacing a worn or damaged ring. Regular replacement helps protect the piston and cylinder from blow‐by, reduces power loss, and supports consistent cutting performance. Suitable for professional users and DIY owners who need a straightforward, like‐for‐like replacement that keeps their saw running efficiently in demanding garden and forestry work.
Key Features:
- Genuine Husqvarna part for assured fit and compatibility
- Precision-made ring profile for consistent compression and sealing
- Helps maintain power, throttle response, and starting reliability
- Durable, heat- and wear-resistant construction for long service life
- Supports cleaner combustion and reduces blow‐by in two‐stroke engines
- Straightforward to fit with standard workshop tools, minimising downtime
- Helps prevent premature wear of piston and cylinder surfaces
- Compatible with 235, 545, 550XP, and 550XPG chainsaws
- Matches OEM specification: 577 95 83-01 (577958301)
Typical Applications:
Used during top-end refreshes, routine maintenance, or after signs of compression loss (hard starting, reduced power). Suitable for workshop rebuilds and field repairs by arborists, landscapers, forestry professionals, hire fleets, and homeowners. Ideal when replacing a scored or worn ring to stabilise performance and extend engine life in Husqvarna chainsaws.
Also known as:
Engine ring, cylinder ring, compression ring, piston sealing ring for two‐stroke chainsaw engines. Often referenced during top-end rebuilds or service kits where maintaining correct compression and combustion efficiency is required.
Fits Models:
235, 545, 550XP, 550XPG
Alternate Part Numbers:
577 95 83-01, 577958301
Product Specifications
| L&S Part No. | 577 95 83 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 577958301 |
| Unit of Sale | 1 |
| Applications | 235, 545, 550XP, 550XPG |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 545 | 550XP, 550XPG |
