Description
Overview:
The Piston Ring D43 G2 is a genuine Husqvarna spare for maintaining correct compression in 43 mm bore two‐stroke chainsaw engines. Made from high‐quality steel, it provides a reliable seal between the piston and cylinder to reduce blow‐by, stabilise idle, and help restore cutting performance under load. This ring is engineered to OEM tolerances for dependable fit and function in demanding use. It is supplied under MPN 582 70 28 01 (582702801) and is suitable for Husqvarna 545 Mark II and 545G Mark II models, as well as selected 550 series variants. Ideal for routine top‐end servicing or when replacing a worn or damaged ring, it supports engine longevity and consistent performance for both professional and DIY users.
Key Features:
- Genuine Husqvarna part for assured compatibility and reliability
- D43 sizing for 43 mm cylinder bores, matching factory specification
- Helps maintain optimal compression and power by improving piston sealing
- Durable steel construction for heat and wear resistance in two‐stroke use
- Precision‐made for smooth bedding‐in and consistent performance
- Designed for straightforward fitting during top‐end maintenance with standard tools
- Supports easier starting, stronger throttle response, and stable idle when other components are in good condition
- Suitable for preventative maintenance or to address loss of power and hard starting
- Compatible with selected Husqvarna 545 and 550 Mark II chainsaws
Typical Applications:
Used during engine top‐end overhauls, routine servicing, or repairs addressing low compression, poor starting, or reduced cutting power. Common when replacing a piston or refurbishing a cylinder after wear or light scoring, helping restore efficiency for regular forestry, landscaping, and site work.
Also known as:
Compression ring, cylinder ring, engine piston ring, sealing ring for two‐stroke chainsaw engines.
Fits Models:
545 Mark II
545G Mark II
550XP Mark II
550XPG Mark II
Alternate Part Numbers:
582702801
Product Specifications
| L&S Part No. | 582 70 28 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 582702801 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Key Features | - Genuine Husqvarna part ensures compatibility with specific models - D43 size fits 43 mm cylinder bores - Steel construction resists heat and wear - Precision-made for smooth bedding-in - Compatible with Husqvarna 545 and 550 Mark II chainsaws |
| Fits Models | 550XP Mark II | 545 Mark II | 545G Mark II | 550XPG Mark II |
