---
product_id: 295907435
title: "eOUTIL Brake Fluid Tester Pen, Hydraulic Fluid/Liquid/Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid - Black"
brand: "eoutil"
price: "¥9838"
currency: JPY
in_stock: true
reviews_count: 6
url: https://www.desertcart.jp/products/295907435-eoutil-brake-fluid-tester-pen-hydraulic-fluid-liquid-oil-moisture
store_origin: JP
region: Japan
---

# 1.5V Power 5 LED Indicators Portable & Durable eOUTIL Brake Fluid Tester Pen, Hydraulic Fluid/Liquid/Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid - Black

**Brand:** eoutil
**Price:** ¥9838
**Availability:** ✅ In Stock

## Summary

> 🚗 Drive with Confidence: Know Your Brake Fluid Status!

## Quick Answers

- **What is this?** eOUTIL Brake Fluid Tester Pen, Hydraulic Fluid/Liquid/Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid - Black by eoutil
- **How much does it cost?** ¥9838 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/295907435-eoutil-brake-fluid-tester-pen-hydraulic-fluid-liquid-oil-moisture)

## Best For

- eoutil enthusiasts

## Why This Product

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

## Key Features

- • **Safety First:** Ensure your brake fluid is in top condition for safer driving.
- • **Instant Readings:** Get quick and easy moisture level readings in seconds.
- • **Smart Power Saving:** Automatic shutdown feature to conserve battery life.
- • **Compact & Convenient:** Lightweight and portable, take it anywhere with ease.
- • **User-Friendly Design:** Perfect for beginners, no complicated setup required.

## Overview

The eOUTIL Brake Fluid Tester Pen is a compact and user-friendly tool designed to analyze the moisture content in DOT3, DOT4, and DOT5 brake fluids. With 5 LED indicators for easy reading, this durable tester ensures your vehicle's braking system is safe and reliable. Its automatic shutdown feature enhances battery life, making it an essential tool for every car owner.

## Description

Brake Fluid Tester Pen, Hydraulic Fluid/Liquid/Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid - Black

## Features

- SAFE&USEFUL---The unit is Mini Pen Liquid Moisture Water Tester Tool. Check the health status of DOT3, DOT4, DOT5 car brake fluid, it will be safer for your driving.
- 5 LED INDICATORS---5 LED to indicate percentage of water in the brake fluid with three colors green yellow and red. Even in the dark does not affect reading, make reading data easier.
- EASY TO USE---The brake fluid tester is easy to use. Check the quality of brake fluid in car only takes seconds. Make it easier to operate for beginner. It's a must-have car tool for your car owners.
- PORTABLE&DURABLE---Brake fluid tester pen is small compact size, easy to carry. Super strong ABS shell, has long service life.
- AUTO TURN OFF---In order to save power, this test pen has the automatic shutdown function, it will automatically turn off the power 15 seconds after starting every time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | eOUTIL |
| Brand | eOUTIL |
| Package Dimensions | 16.76 x 3.81 x 3.81 cm; 45 g |
| Item part number | BFT034BL300-LW-ca03 |
| Manufacturer Part Number | BFT034BL300-LW-ca03 |
| Outer Material | abs |
| Material | Plastic |
| Size | small |
| Colour | BLACK |
| Voltage | 1.5 Volts |
| Manufacturer | eOUTIL |
| Country of Origin | China |
| Item Weight | 45 g |

## Images

![eOUTIL Brake Fluid Tester Pen, Hydraulic Fluid/Liquid/Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid - Black - Image 1](https://m.media-amazon.com/images/I/51Lvrzs5hZL.jpg)

## Questions & Answers

**Q: Does it work for DOT 5 ?**
A: dot 5 is silicone based & dot 5.1 will hold moisture. this product detects moisture content

**Q: What is the difference between this model for $8.91 and the $6.99 model, bft034bl300-lw-03?**
A: can't tell you the difference , only that the one I bought fell apart .

**Q: Does the brake fluid 
tester work with Dot 3 and 4 fluid?**
A: According to the listing for the item, it does. I only used mine on DOT 3 so I don't know for sure. My guess would be that the only one it wouldn't work on is DOT 5/SIlicone brake fluid

**Q: Does it check power steering fluid or antifreeze coolsnt**
A: It Only check brake fluid

## Customer Reviews

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    works well
  

*by A***R on Reviewed in India on 23 January 2023*

works well  bult quality could be better  but for the  price  cannot complaint

### ⭐⭐⭐⭐⭐ 







  
    Super Útil e Necessária
  
  

*by M***E on Reviewed in Brazil on 7 June 2024*

A Caneta de Teste de Fluido de Frei é um acessório indispensável para quem deseja realizar a manutenção de seu automóvel a nível amador assim como aos mecânicos profissionais. Fantástica!!!

### ⭐⭐⭐⭐⭐ 







  
  
    Great tool, even for a professional
  

*by A***S on Reviewed in Canada on 25 April 2021*

This little pen tester is great. It works quickly and easily, no mess no fuss. I use it at work (Mechanic) and at home on project cars.Not much else to say, it's a pen that tests for water in brake fluid. It's worth every penny.

## Frequently Bought Together

- eOUTIL Brake Fluid Tester Pen, Hydraulic Fluid Liquid Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid
- GODESON 88702 Smart Color Coded Tire Tread Depth Gauge

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**Shop now:** [https://www.desertcart.jp/products/295907435-eoutil-brake-fluid-tester-pen-hydraulic-fluid-liquid-oil-moisture](https://www.desertcart.jp/products/295907435-eoutil-brake-fluid-tester-pen-hydraulic-fluid-liquid-oil-moisture)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-18*