Description
Overview:
This Genuine Piston Ring is a critical engine component for Husqvarna disc cutters, helping to seal the combustion chamber and maintain the correct compression for steady power and reliable starting. Manufactured to OEM standards from a durable metal alloy, it resists heat, friction, and wear in demanding cutting environments. Designed specifically for Husqvarna machines, it offers a precise fit and dependable performance in two‐stroke engines. Ideal for routine maintenance or a direct replacement when compression drops, it supports consistent cutting efficiency and engine life. Compatible with popular models, including the Husqvarna K650 Super and Mark II, it is a practical choice for trades, hire fleets, and DIY users who need predictable, long‐lasting results from their cut-off saws.
Key Features:
- Genuine Husqvarna part for assured compatibility and quality
- Made to OEM specification for accurate fit and correct ring end-gap clearance when installed
- Helps restore and maintain optimal engine compression and power
- Durable metal construction for long service life under high temperature and load
- Supports smoother starting and more consistent cutting performance
- Suitable for regular preventative maintenance and straightforward replacement
- Stable sealing reduces blow-by and helps maintain correct fuel efficiency
- Reliable choice for professional use in dust and abrasion-prone environments
Typical Applications:
Used when a disc cutter shows signs of low compression, hard starting, reduced power, or increased fuel use. Common in workshop servicing of Husqvarna cut-off saws on site or in the yard. Suitable for routine ring changes on machines that operate daily in masonry, concrete, asphalt, and metal cutting tasks, helping maintain output and prolong engine life.
Also known as:
Engine ring, cylinder ring, compression ring, piston compression ring, top compression ring.
Fits Models:
266, 268, 268K, 272K, 371XP, 66, K650 Active, K650 Cut-n-Break, K650 Super, Mark II
Alternate Part Numbers:
503289017, 503 28 90 17
Product Specifications
| L&S Part No. | 503 28 90 17 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503289017 |
| Unit of Sale | 1 |
| Size | 50mm |
| Applications | 266, 268, 268K, 272K, 371XP, 66, K650 Active, K650 Cut-n-Break, K650 Super, K650Active, K650Cut-n-Break, K650Super, Mark II, MarkII |
| Machine Type | Disc Cutters |
| Fits Brands | Husqvarna |
| Fits Models | K650 Super, Mark II | K650 Cut-n-Break | 266 | 268 | 371XP | 66 | 268K | 272K |
