---
product_id: 168675270
title: "Blade Disc 420 430 x 440 450 x 520 550, 21 cm 400 Series ALT up to 2019"
brand: "husqvarna"
price: "394.25 DT"
currency: TND
in_stock: true
category: "Husqvarna"
url: https://www.desertcart.tn/products/168675270-blade-disc-420-430-x-440-450-x-520-550
store_origin: TN
region: Tunisia
---

# Lightweight 110 g for efficiency Compatible with Automower 400 Series Precision 21 cm diameter disc Blade Disc 420 430 x 440 450 x 520 550, 21 cm 400 Series ALT up to 2019

**Brand:** husqvarna
**Price:** 394.25 DT
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your Automower’s edge — because your lawn deserves precision!

## Quick Answers

- **What is this?** Blade Disc 420 430 x 440 450 x 520 550, 21 cm 400 Series ALT up to 2019 by husqvarna
- **How much does it cost?** 394.25 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/168675270-blade-disc-420-430-x-440-450-x-520-550)

## Best For

- husqvarna enthusiasts

## Why This Product

- Trusted husqvarna brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Build:** Robust black finish ensures long-lasting reliability under tough lawn conditions
- • **Lightweight Design:** Only 110 g to maximize mower battery life and agility
- • **Seamless Compatibility:** Fits Automower 420, 430X, 440, 450X, 520 & 550 (up to 2019)
- • **Future-Proof Your Mower:** Specifically designed for models up to 2019, ensuring perfect fit and function
- • **Optimized Cutting Performance:** 21 cm diameter blade disc engineered for smooth, precise mowing

## Overview

The Husqvarna Blade Disc 400 Series (21 cm diameter) is a precision-engineered replacement part compatible with Automower models 420, 430X, 440, 450X, 520, and 550 manufactured up to 2019. Weighing just 110 grams, this durable black blade disc enhances cutting efficiency and mower performance, ensuring your robotic mower stays sharp and reliable season after season.

## Description

Husqvarna blade disc 400 series - up to including year of manufacture 2019. From year of manufacture 2020, there is another new blade disc. Manufacturer number: 5873781-01. Diameter: 21 cm. Installed in robotic mowers: Automower 4202016- 2017 Automower 430X2016 -2017. Automower 430X (new)2018 Automower 440 2017 Automower 450X2016- 2017, 2018. Automower 5202018 Automower 5502018

## Features

- Husqvarna Knife disc / knife holder, diameter 21 cm
- Manufacturer number: 587378101
- Installed in robotic mowers: Automower 420 (2016 - 2017), Automower 430X (2016 - 2017), Automower 430X (new) (2018)
- Automower 440 (2017), Automower 450X (2016 - 2017, 2018), Automower 520 (2018), Automower 550 (2018)
- Box contents: 1 x blade disc without knife up to year of manufacture 2019

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07QHL84CT |
| Best Sellers Rank | 63,706 in Garden ( See Top 100 in Garden ) 65 in Robotic Lawn Mower Accessories |
| Colour | black |
| Customer Reviews | 4.5 4.5 out of 5 stars (241) |
| Date First Available | 6 Oct. 2019 |
| Guaranteed software updates until | unknown |
| Item Weight | 110 g |
| Item model number | 587378101 |
| Other display features | Wireless |
| Package Dimensions | 21.3 x 21.3 x 2.4 cm; 110 g |

## Images

![Blade Disc 420 430 x 440 450 x 520 550, 21 cm 400 Series ALT up to 2019 - Image 1](https://m.media-amazon.com/images/I/618YCg5B4EL.jpg)

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**Shop now:** [https://www.desertcart.tn/products/168675270-blade-disc-420-430-x-440-450-x-520-550](https://www.desertcart.tn/products/168675270-blade-disc-420-430-x-440-450-x-520-550)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-10-11*