Description
Overview:
The Clutch Spring K513 is a genuine Husqvarna replacement spring for the centrifugal clutch used on professional brushcutters and clearing saws. Made from high-quality spring steel, it provides the calibrated tension needed for the clutch to engage cleanly at the correct engine speed and release at idle. This helps prevent slip, overheating and premature wear of the clutch shoes and drum, keeping drive to the cutting head smooth and consistent. The K513 spring is a direct replacement for OEM No. 505 43 53 01 and fits popular machines including the Husqvarna 343 R and 355 FX. Suitable for routine servicing or repair when the original spring is worn, stretched or broken. Genuine Husqvarna part for assured fit and performance.
Key Features:
- Genuine Husqvarna part; matches OEM specification 505 43 53 01
- Direct-fit replacement; no modifications required
- Durable spring steel construction for long service life
- Restores correct clutch engagement and release
- Helps reduce clutch slip, heat build-up and shoe wear
- Stable performance under frequent start/stop cycles
- Quick to fit with basic tools, minimising downtime
- Compatible with a wide range of Husqvarna brushcutters and clearing saws
- Supplied as a single spring, ready to install
Typical Applications:
Used during scheduled maintenance or repair when symptoms include the cutting head creeping at idle, delayed take-up, or loss of drive under load. Suitable for grounds maintenance, landscaping, agriculture and forestry clearing where reliable brushcutter operation is essential.
Also known as:
Centrifugal clutch return spring, clutch shoe spring, drive-clutch spring, engine clutch spring for brushcutters, K513 spring.
Fits Models:
343, 343 F, 343 FR, 343 FRM, 343 R, 343F, 343FR, 343FRM, 343R, 345 FX, 345 FXT, 345 R, 345 RX, 345FX, 345FXT, 345R, 345RX, 355 FRM, 355 FX, 355 FXT, 355 RX, 355FRM, 355FX, 355FXT, 355RX, BC2145, BC2255, BC2255 (2019-07, CC2145, FC2145, FC2145 S, FC2145 W, FC2145S, FC2145W, FC2255, FC2255 W, FC2255W, MC2255
Alternate Part Numbers:
505435301
Product Specifications
| L&S Part No. | 505 43 53 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 505435301 |
| Unit of Sale | 1 |
| Machine Type | Brushcutters |
| Fits Brands | Husqvarna |
| Key Features | - Genuine Husqvarna part; matches OEM specification 505 43 53 01 - Direct-fit replacement; no modifications required - Durable spring steel construction for long service life - Compatible with Husqvarna 343 R and 355 FX - Reduces clutch slip and heat build-up |
| Fits Models | 343F | 343FR | 343R | 345FX | 345FXT | 345R | 345RX | 355FRM | 355FX | 355FXT | 355RX | 343FRM |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
Related Products
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
