Description
Overview:
The Piston Ring for Husqvarna 522 Hedgetrimmers is a genuine OEM replacement designed to restore and maintain correct engine compression in small two‐stroke Husqvarna machines. Built from durable, wear‐resistant materials and finished to precise tolerances, it forms a reliable seal between the piston and cylinder to reduce blow‐by, support heat transfer, and keep performance consistent. This ring is suitable for the Husqvarna 522 series hedgetrimmers and compatible trimmer engines such as the 122R, helping engines start easily, idle steadily, and deliver the power they were designed for. As a Genuine Husqvarna part (MPN: 505155802), it offers assured fit and function, making it a practical choice for routine maintenance or a straightforward repair when compression loss is suspected.
Key Features:
- Genuine Husqvarna OEM part for correct fit and dependable performance
- Helps restore compression for easier starting and smooth running
- Precision-made for an accurate seal and reduced blow‐by
- Wear‐resistant construction for long service life
- Supports stable idle, consistent power, and fuel efficiency
- Direct replacement for the original ring; no modifications required
- Compatible with selected Husqvarna 22 cc class engines used in handheld tools
- Suitable for professional users and DIY maintenance
- Supplied to manufacturer specifications for reliable results
Typical Applications:
Used during engine overhauls or routine repairs on Husqvarna handheld equipment to address loss of power, hard starting, or poor idle caused by worn rings. Ideal when refurbishing a cylinder and piston assembly, after high hours of use, or following a top‐end clean‐up to keep hedgetrimmers and grass trimmers running efficiently.
Also known as:
Compression ring, engine compression ring, 2‐stroke piston ring, trimmer piston ring, cylinder sealing ring, small engine ring.
Fits Models:
122R, 122RJ, 522
Alternate Part Numbers:
505 15 58-02, 505155802
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