Description
Overview:
This is a Genuine Husqvarna piston ring, OEM No. 522 99 01-01, for restoring and maintaining correct cylinder sealing in Husqvarna two‐stroke petrol engines. The ring forms a tight seal between the piston and cylinder wall to hold combustion pressure, control oil, and protect against blow‐by. Manufactured to Husqvarna's OEM tolerances from durable, heat‐resistant metal, it offers reliable performance under continuous high revs and demanding site conditions. It is suitable for professional cutters and chainsaws including the 576XP AutoTune and K770. Fitting a genuine ring helps recover lost power, improve throttle response, and support efficient fuel use, making it a sensible choice during a top‐end service or when addressing hard starting, low compression, or reduced cutting performance.
Key Features:
- Genuine Husqvarna part for assured compatibility and fit with listed models
- OEM number 522 99 01-01 for quick identification and ordering
- Helps restore and maintain engine compression and power output
- Reduces blow‐by and assists with clean combustion for better efficiency
- Wear‐resistant construction for long service life in harsh, dusty environments
- Stable sealing at high temperatures and continuous duty cycles
- Supports easier starting and consistent idle when compression has dropped
- Fits using standard workshop methods and tools to minimise downtime
- Matches OEM tolerances to protect cylinder plating and piston from scoring
- Suitable for preventative maintenance and full top‐end rebuilds
Typical Applications:
Used during routine servicing or rebuilds of Husqvarna chainsaws and power cutters to recover compression, reduce smoke, and stabilise performance. Common in workshop repairs after wear, ring sticking, or loss of power on site. Ideal for saws and cutters used in masonry, rescue, landscaping, forestry, and general construction tasks.
Also known as:
Compression ring, engine compression ring, cylinder ring, engine sealing ring, top ring.
Fits Models:
576XP AutoTune, K760 Cut-n-Break II, K770, K770 Dry Cut, K770 OilGuard, K770 Rescue, K770 VAC, K770VAC
Alternate Part Numbers:
522 99 01-01, 522990101, 522 99 01 01
Product Specifications
| L&S Part No. | 522 99 01 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 522990101 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws, Disc Cutters |
| Fits Brands | Husqvarna |
| Key Features | - Genuine Husqvarna part ensures compatibility with listed models - OEM number 522 99 01-01 for easy identification - Restores engine compression and power output - Wear-resistant for long service life in harsh conditions - Fits models: 576XP AutoTune, K770, K770 Rescue |
| Fits Models | 576XP AutoTune | K760 Cut-n-Break II | K770 Dry Cut | K770 OilGuard | K770 Rescue | K770 SmartGuard | K770 VAC |
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