---
product_id: 675966284
title: "Jewkot 2 PCS Car Brake Fluid Moisture Content Test Pen, Portable Brake Fluid Fault Diagnosis Test Pen with LED Indicator Light, Maintenance Test Accessory, Compatible with Most Vehicle Types (Black)"
brand: "jewkot"
price: "86 zł"
currency: PLN
in_stock: true
reviews_count: 3
url: https://www.desertcart.pl/products/675966284-jewkot-2-pcs-car-brake-fluid-moisture-content-test-pen
store_origin: PL
region: Poland
---

# LED Indicator Accurate Measurement Portable Design Jewkot 2 PCS Car Brake Fluid Moisture Content Test Pen, Portable Brake Fluid Fault Diagnosis Test Pen with LED Indicator Light, Maintenance Test Accessory, Compatible with Most Vehicle Types (Black)

**Brand:** jewkot
**Price:** 86 zł
**Availability:** ✅ In Stock

## Summary

> 🚦 Stay Safe on the Road with Jewkot's Brake Fluid Test Pen!

## Quick Answers

- **What is this?** Jewkot 2 PCS Car Brake Fluid Moisture Content Test Pen, Portable Brake Fluid Fault Diagnosis Test Pen with LED Indicator Light, Maintenance Test Accessory, Compatible with Most Vehicle Types (Black) by jewkot
- **How much does it cost?** 86 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/675966284-jewkot-2-pcs-car-brake-fluid-moisture-content-test-pen)

## Best For

- jewkot enthusiasts

## Why This Product

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

## Key Features

- • **⏱️ Auto Shut-off:** Smart energy-saving feature turns off after 12 seconds of inactivity.
- • **🛡️ Safety First:** Identify dangerous moisture levels to ensure your vehicle's braking system is reliable.
- • **💡 Instant Feedback:** 5 LED lights provide clear, immediate results on moisture content.
- • **🔍 Test with Confidence:** Easily assess brake fluid quality with a simple dip and click.
- • **🚗 Universal Compatibility:** Designed to work with most vehicle types for hassle-free maintenance.

## Overview

The Jewkot 2 PCS Car Brake Fluid Moisture Content Test Pen is a portable and user-friendly tool designed to accurately measure the moisture content in brake fluid. Featuring a clear LED indicator system, this test pen provides instant feedback on fluid quality, ensuring timely maintenance and enhanced safety for your vehicle. Lightweight and compact, it’s perfect for on-the-go diagnostics, compatible with most vehicle types, and includes an automatic shut-off feature for convenience.

## Description

Jewkot 2 PCS Car Brake Fluid Moisture Content Test Pen, Portable Brake Fluid Fault Diagnosis Test Pen with LED Indicator Light, Maintenance Test Accessory, Compatible with Most Vehicle Types (Black)

## Features

- Function: The brake fluid test pen is used to test the quality of the brake fluid. The test result of the water content percentage of the brake fluid is displayed by the number of the 5 LED lights on the test pen. Powerful functions and simple operation. Accurate measurement, safe to use, and has automatic shutdown function.
- Easy to Use: Unscrew the cap of the brake fluid reservoir and open the cap of the test pen. Dip the test probe into the brake fluid in the reservoir. Then turn on the power button and wait for the indicator light to turn on. After the test is completed, the test pen will automatically turn off after 12 seconds.
- Portable Design: This brake fluid test pen is lightweight, compact, easy to use and easy to carry. You can detect the moisture status of the brake fluid at any time and replace it in time to reduce unnecessary safety threats.
- Instructions: When the color of the indicator light is green/yellow/yellow/red, it means that the water content is close to 3%, and it is recommended to replace the brake fluid. When the color of the indicator light is green/yellow/yellow/red/red, it means that the water content is higher than 4%, which is dangerous and the brake fluid must be replaced immediately.
- Packaging Details: You will receive two car brake fluid moisture content testing pens with pen cap. You can buy with confidence. If you have any questions about the product, you can contact us in time and we will try our best to solve the problem for you.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Jewkot |
| Brand | Jewkot |
| Package Dimensions | 0.3 x 0.2 x 0.1 cm; 28.35 g |
| Item model number | KOTSCJCB3401BL-2PC-2 |
| Manufacturer Part Number | KOT5649 |
| Item Weight | 28.3 g |

## Images

![Jewkot 2 PCS Car Brake Fluid Moisture Content Test Pen, Portable Brake Fluid Fault Diagnosis Test Pen with LED Indicator Light, Maintenance Test Accessory, Compatible with Most Vehicle Types (Black) - Image 1](https://m.media-amazon.com/images/I/71P3CUCBwkL.jpg)
![Jewkot 2 PCS Car Brake Fluid Moisture Content Test Pen, Portable Brake Fluid Fault Diagnosis Test Pen with LED Indicator Light, Maintenance Test Accessory, Compatible with Most Vehicle Types (Black) - Image 2](https://m.media-amazon.com/images/I/61XvUTzI8dL.jpg)
![Jewkot 2 PCS Car Brake Fluid Moisture Content Test Pen, Portable Brake Fluid Fault Diagnosis Test Pen with LED Indicator Light, Maintenance Test Accessory, Compatible with Most Vehicle Types (Black) - Image 3](https://m.media-amazon.com/images/I/61EwlrniM8L.jpg)
![Jewkot 2 PCS Car Brake Fluid Moisture Content Test Pen, Portable Brake Fluid Fault Diagnosis Test Pen with LED Indicator Light, Maintenance Test Accessory, Compatible with Most Vehicle Types (Black) - Image 4](https://m.media-amazon.com/images/I/71s3SNfmv5L.jpg)
![Jewkot 2 PCS Car Brake Fluid Moisture Content Test Pen, Portable Brake Fluid Fault Diagnosis Test Pen with LED Indicator Light, Maintenance Test Accessory, Compatible with Most Vehicle Types (Black) - Image 5](https://m.media-amazon.com/images/I/81KCkqHWsxL.jpg)

## Available Options

This product comes in different **Color, Size, Number of Items** options.

## Customer Reviews

### ⭐ 







  
  
    Inaccurate
  

*by K***O on Reviewed in the United States on 12 October 2024*

After some time with them, I’ve done a couple brake flushes, I curiously tested a vehicles brake fluid with BOTH pens i received. One pen gave me a full 5% illumination, while, the other, tested at 2%. Besides that, these are very flimsy and cheaply made. Inaccurate for Brake Fluid Testing

### ⭐⭐⭐⭐⭐ 







  
  
    Very Useful Tool
  

*by D***N on Reviewed in the United States on 25 March 2024*

I ordered this tool to check my brake fluid and the tool works very well. I dipped it in my brake fluid reservoir and the tester showed that my brake fluid had an acceptable level of moisture.One thing that I noticed was that after dipping the tester in brake fluid once, you have to wipe off the metal leads before dipping it again or you'll get a false reading.This tool is affordable and is good to have in your tool box to check and see if your brake fluid needs to be changed. Highly recommended.

### ⭐⭐⭐⭐ 







  
  
    Uncertain accuracy
  

*by E***H on Reviewed in the United States on 22 March 2024*

I tested the original brake fluid in my 15 year old 42000 mile car and got a 1% reading. I then tested it in my nearly new hybrid car and also got a 1% reading. When I rinsed the tester off in running water I also got a 1% reading in the water!  Makes me wonder. I’m going to soon replace the brake pads on the old car, I think I will flush the dot3 fluid at the same time, just to be safe. The tester’s battery door cover fits great with no battery, it was a real struggle to get the cover on with a battery in the holder. I think I will take some brake fluid and let it sit in the screened in porch, exposed to humid air outside in rain and shine for a few weeks and test that before I make a final opinion.

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-22*