---
product_id: 243902298
title: "labwork CDI Box Replacement for Yamaha YFZ 450 2004 2005 2006 2007 2008 2009 Replacement for 5TG-85540-10-00"
brand: "labwork"
price: "£31.79"
currency: GBP
in_stock: true
reviews_count: 3
category: "Labwork"
url: https://www.desertcart.co.uk/products/243902298-labwork-cdi-box-replacement-for-yamaha-yfz-450-2004-2005
store_origin: GB
region: United Kingdom
---

# 12-pin precision connector Compact 86x81x36 mm size Bolt-on easy installation labwork CDI Box Replacement for Yamaha YFZ 450 2004 2005 2006 2007 2008 2009 Replacement for 5TG-85540-10-00

**Brand:** labwork
**Price:** £31.79
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your ride with precision power – don’t get left in the dust!

## Quick Answers

- **What is this?** labwork CDI Box Replacement for Yamaha YFZ 450 2004 2005 2006 2007 2008 2009 Replacement for 5TG-85540-10-00 by labwork
- **How much does it cost?** £31.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/243902298-labwork-cdi-box-replacement-for-yamaha-yfz-450-2004-2005)

## Best For

- labwork enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Durable:** Slim 36mm height design fits snugly without bulk
- • **Plug & Play Power:** Direct replacement for Yamaha YFZ 450 (2004-2009) with exact fitment
- • **Precision Engineering:** 12-pin connector ensures seamless electronic ignition performance
- • **Trusted Compatibility:** Specifically crafted for Yamaha part numbers 5TG-85540-00-00 & 5TG-85540-10-00
- • **Cost-Effective Upgrade:** Save over 70% compared to OEM CDI box without compromising function

## Overview

The labwork CDI Box Replacement is a direct-fit electronic ignition module designed for Yamaha YFZ 450 models from 2004 to 2009. Featuring a 12-pin male connector and compact dimensions (86x81x36 mm), it offers a bolt-on installation that matches OEM specifications for part numbers 5TG-85540-00-00 and 5TG-85540-10-00. This cost-effective alternative delivers reliable ignition performance, making it a smart upgrade for powersports enthusiasts seeking value without sacrificing quality.

## Description

Buy labwork CDI Box Replacement for Yamaha YFZ 450 2004 2005 2006 2007 2008 2009 Replacement for 5TG-85540-10-00: Electronic Ignition - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Wow it actually works - Was surprised that this cdi actually works the factory one is $600. Haven’t put more than an hour on it though so hopefully it lasts a while
Review: Don’t buy! - Only work for a day

## Features

- Fitment : Replacement for Yamaha YFZ 450 2004 2005 2006 2007 2008 2009
- Replacement for Part Number: 5TG-85540-00-00, 5TG-85540-10-00
- Number of plugs: 2 / Number of pins: 12
- Dimensions: Height: 36 mm / Length: 86 mm / Width: 81 mm
- Please compare your part with our product display pictures, make sure they have the same

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZT3F427 |
| Best Sellers Rank | #395,587 in Automotive ( See Top 100 in Automotive ) #147 in Powersports Ignition Computers |
| Brand Name | labwork |
| Compatible with Vehicle Type | Motorcycle |
| Connector Gender | Male |
| Customer Reviews | 4.2 4.2 out of 5 stars (17) |
| Installation Type | Bolt-On |
| Manufacturer | labwork |
| Part Interchange Info | replacement |

## Product Details

- **Brand:** labwork
- **Connector Gender:** Male
- **Installation Type:** Bolt-On
- **Manufacturer:** labwork
- **Vehicle Service Type:** Motorcycle

## Images

![labwork CDI Box Replacement for Yamaha YFZ 450 2004 2005 2006 2007 2008 2009 Replacement for 5TG-85540-10-00 - Image 1](https://m.media-amazon.com/images/I/510Q702cL+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Wow it actually works
*by K***N on October 29, 2025*

Was surprised that this cdi actually works the factory one is $600. Haven’t put more than an hour on it though so hopefully it lasts a while

### ⭐ Don’t buy!
*by T***Y on August 28, 2024*

Only work for a day

### ⭐⭐⭐⭐⭐ Excellent
*by G***S on November 21, 2025*

Excellent

## Frequently Bought Together

- labwork CDI Box Replacement for Yamaha YFZ 450 2004 2005 2006 2007 2008 2009 Replacement for 5TG-85540-10-00
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**Shop now:** [https://www.desertcart.co.uk/products/243902298-labwork-cdi-box-replacement-for-yamaha-yfz-450-2004-2005](https://www.desertcart.co.uk/products/243902298-labwork-cdi-box-replacement-for-yamaha-yfz-450-2004-2005)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-17*