Description
Overview:
This Genuine Husqvarna piston assembly is made for the K700 Active 3 disc cutter. It replaces a worn or damaged piston to restore compression, power and reliable starting. The assembly comprises a precision-machined aluminium alloy piston with steel components for strength, designed to run in the K700 Active 3 two-stroke engine under high temperature and load. It helps maintain smooth operation and consistent cutting performance on concrete, masonry and asphalt. Built to Husqvarna factory tolerances for correct fit and sealing, it is identified by MPN 506099071 (also written as 506 09 90-71). If your machine has lost power, is hard to start or shows scoring on the piston, this OEM assembly provides the correct specification to bring the engine back within standard.
Key Features:
- Genuine Husqvarna OEM part for assured compatibility and quality
- Precision tolerances to restore compression, power and throttle response
- Durable aluminium piston with steel wrist pin and circlips for long service life
- Matched piston rings to promote correct sealing and reduced blow-by
- Direct replacement for the original part; installs without modification
- Engineered for high heat and load in professional cutting environments
- Helps reduce vibration and improves overall cutting consistency when the top end is refreshed
- Supplied to Husqvarna specifications under part number 506099071 (506 09 90-71)
Typical Applications:
Used during engine rebuilds or scheduled maintenance on Husqvarna K700 Active 3 disc cutters. Ideal for restoring performance after piston wear, scoring or loss of compression. Common in construction, utilities, groundwork and hire fleet servicing where reliable cutting of concrete, stone, slabs and asphalt is essential.
Also known as:
Piston kit, piston set, replacement piston assembly, engine top-end piston, small-end/wrist pin kit, piston ring set with piston, reciprocating assembly, internal engine component for disc cutters.
Fits Models:
K700 Active 3, K700Active3
Alternate Part Numbers:
506 09 90-71, 506099071
Product Specifications
| L&S Part No. | 506 09 90 71 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 506099071 |
| Unit of Sale | 1 |
| Machine Type | Disc Cutters |
| Fits Brands | Husqvarna |
| Key Features | - Genuine Husqvarna OEM part for K700 Active 3 disc cutter - Precision-machined aluminium alloy piston for high temperature and load - Includes steel wrist pin and circlips for durability - Matched piston rings ensure correct sealing and reduced blow-by - Direct replacement, installs without modification |


