---
product_id: 25144711
title: "Original Equipment Mower Blade Kit #GY20850"
brand: "john deere"
price: "A$148"
currency: AUD
in_stock: true
reviews_count: 12
category: "John Deere"
url: https://www.desertcart.com.au/products/25144711-original-equipment-mower-blade-kit-gy20850
store_origin: AU
region: Australia
---

# Optimized 42-inch deck compatibility OEM precision fit Heavy-duty steel build Original Equipment Mower Blade Kit #GY20850

**Brand:** john deere
**Price:** A$148
**Availability:** ✅ In Stock

## Summary

> 🌿 Cut like a pro, mow like a legend!

## Quick Answers

- **What is this?** Original Equipment Mower Blade Kit #GY20850 by john deere
- **How much does it cost?** A$148 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/25144711-original-equipment-mower-blade-kit-gy20850)

## Best For

- john deere enthusiasts

## Why This Product

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

## Key Features

- • **Seamless OEM Fit:** Guaranteed perfect compatibility with John Deere models 102-135 & LA100-LA135 series
- • **Balanced for Precision:** Expertly balanced blades ensure smooth, vibration-free mowing every time
- • **Durable Steel Construction:** Engineered from premium steel for long-lasting, heavy-duty performance
- • **Trusted John Deere Quality:** Genuine OEM part with a 4.7-star rating and 6-month warranty for peace of mind
- • **Optimized for 42-Inch Decks:** Specifically designed to maximize cutting efficiency on 42-inch mower decks

## Overview

The John Deere Original Equipment Mower Blade Kit #GY20850 is a genuine OEM replacement blade set designed for select John Deere mowers and tractors with 42-inch decks. Crafted from durable steel and precision-balanced, these blades deliver reliable, smooth cutting performance. Backed by a strong customer rating and a 6-month warranty, this kit ensures your mower operates at peak efficiency with authentic John Deere quality.

## Description

Great tools at a great price

Review: Good quality, genuine JD part - Worked well. Interesting that the old, worn out blades someone lost over 1" on either end. but the new ones are fine.
Review: Perfect replacement for John Deere 125 Automatic w/42” deck. - Review of John Deere Original Equipment Mower Blade Kit #GY20850 I ordered these to replace the blades on my John Deere 125 Automatic with the 42” deck. They fit perfectly and seem to be heavy duty. Time will tell. Feel perfectly balanced too. They are as described in the ad/description.

## Features

- OEM John Deere Part Number: GY20850
- Fits Mowers/Tractors: 102, 105, 115, 125, 135
- Fits Mowers/Tractors: LA100(42in), LA105(42in),LA110(42in), LA115(42in), LA120(42in), LA125(42in), LA135(42in)
- Fits Mowers/Tractors: D100, D105, D110, D120, D125, D130, X125, X145

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003R2FH0G |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #15,017 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #33 in Lawn Mower Blades |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,484) |
| Date First Available | June 10, 2010 |
| Included Components | Materials |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1 pounds |
| Item model number | GY20850 |
| Manufacturer | John Deere |
| Material | Steel |
| Part Number | GY20850 |
| Power Source | gasoline-powered |
| Product Dimensions | 10 x 10 x 10 inches |
| Warranty Description | 6 months |

## Images

![Original Equipment Mower Blade Kit #GY20850 - Image 1](https://m.media-amazon.com/images/I/71tk67sfz2L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality, genuine JD part
*by B***2 on September 13, 2025*

Worked well. Interesting that the old, worn out blades someone lost over 1" on either end. but the new ones are fine.

### ⭐⭐⭐⭐⭐ Perfect replacement for John Deere 125 Automatic w/42” deck.
*by R***R on November 7, 2024*

Review of John Deere Original Equipment Mower Blade Kit #GY20850 I ordered these to replace the blades on my John Deere 125 Automatic with the 42” deck. They fit perfectly and seem to be heavy duty. Time will tell. Feel perfectly balanced too. They are as described in the ad/description.

### ⭐⭐⭐⭐⭐ OEM Product
*by A***R on October 14, 2025*

Replaced my original blades after several years. These are the exact same blades that the tractor came with. It’s important to use OEM to keep the overall balance of the tractor deck. Worth the extra money for this quality.

## Frequently Bought Together

- John Deere Original Equipment Mower Blade Kit #GY20850
- Genuine OEM Home Maintenance Service Kit John Deere D 100 105 110 Tractor LG266
- John Deere Original Equipment Flat Belt - GX20072

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-08*