Description
Overview:
The Piston Ring for Husqvarna 240RJ brushcutters is a genuine Husqvarna part designed to restore and maintain correct cylinder sealing and engine compression. Built with durable metal construction to withstand heat, friction, and continuous use, it helps the engine start reliably, deliver consistent power, and run efficiently over time. This ring is intended for small two‐stroke brushcutter engines and is a direct match for the Husqvarna 240RJ and 240L models. Supplied to OEM specification under part number 503 28 90-01, it fits correctly in the piston groove to minimise blow‐by and oil contamination, supporting clean combustion and reduced wear on the cylinder and piston. Suitable for routine maintenance or a top‐end refresh where compression has dropped due to ring wear.
Key Features:
- Genuine Husqvarna part for assured fit and function (OEM No. 503 28 90-01)
- Maintains engine compression for easier starting and steady cutting performance
- Durable metal ring designed for heat and wear resistance in two‐stroke engines
- Matches OEM tolerances for correct end gap and seating in the piston groove
- Helps reduce blow‐by, supporting cleaner combustion and longer engine life
- Reliable choice for preventative maintenance and rebuilds
- Compatible with Husqvarna 240RJ and 240L brushcutters
- Straightforward to install during a routine top‐end service with standard workshop practice
- Supports consistent fuel efficiency and throttle response when correctly installed
- Backed by Husqvarna's parts quality for dependable service life
Typical Applications:
Used during scheduled maintenance, piston/cylinder overhauls, or when symptoms of low compression occur (hard starting, loss of power, poor idle). Ideal for restoring performance on Husqvarna 240‐series brushcutters used in landscaping, grounds maintenance, and professional brush clearing.
Also known as:
Engine ring, cylinder ring, piston sealing ring, engine compression seal.
Fits Models:
240RJ, 240L, 240 L
Alternate Part Numbers:
503 28 90-01, 503289001
Product Specifications
| L&S Part No. | 503 28 90 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503289001 |
| Unit of Sale | 1 |
| Machine Type | Brushcutters |
| Fits Brands | Husqvarna |
| Key Features | - Genuine Husqvarna part, OEM No. 503 28 90-01 - Compatible with Husqvarna 240RJ and 240L models - Durable metal construction for heat and wear resistance - Maintains engine compression for reliable starting - Reduces blow-by for cleaner combustion and longer engine life |
| Fits Models | 240RJ | 240 L |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£83.17 £69.31 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£83.68 £69.73
Related Products
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£83.17 £69.31 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£83.68 £69.73
