Updated: 24 Feb 2025

testing brake fluids

Explore up to 18% Off

Updated: 24 Feb 2025

#1

Best Choice
Powerbuilt Brake Fluid Tester, LED Light Quality Indicators for Braking Systems, Test DOT 4 Water Content, Pocket Sized 647626

9.8

Powerbuilt

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Main highlights

This Device Is for checking the quality of the Brake Fluid In the Reservoir and In the lines

The Led Indicators will Identify the percentage of water content In the Brake Fluid

Brake Fluid Tester
#2

Value for Money
Brake Fluid Tester, High Precision Car Brake Fluid Detector, Hydraulic Fluid/Liquid/Oil Moisture Analyzer with LCD Screen Audible Alarm DOT3 DOT4 DOT5.1 Tester,Automotive Replacement Level Sensors

9.6

KINGBOLEN

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Main highlights

[Scope of Application] --- Automotive Brake Fluid Detector is common fit for most vehicle. Check the health status of DOT-3, DOT-4, DOT-5.1 brake fluid and also most synthetic brake fluids. It's extremly convenient for personal use and broadly applied in individual workshops, repair factories and dealer workshops.

[Precision test and universal probe] --- Highly sensitive and precise probe, can quickly and accurately detect DOT-3, DOT-4, DOT-5.1 brake fluid and has received the result in seconds. The gooseneck probe provides flexibility in detection, making the detection process more elastic and efficient. Probe top with flash light, you can observe the colour of the brake fluid if needed.

[Easy Instant Read and Alarm] --- High sensitive probe + high resolution screen + audible alarm, instant display result, large display with backlight, easy and clear reading in sun or night. NEVER LIMITED BY THE ENVIRONMENTS. As soon as brake fluid sounds too much water alarm, it will remind you that you need to change the brake fluid.
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#3
KAIWEETS Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1

9.5

KAIWEETS

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Why we love it

Durable and corrosion-resistant design.

Quick and precise measurements.

User-friendly with convenient alerts.

Main highlights

Corrosion Resistant and Accurate
Features a corrosion-resistant probe with 0.3 accuracy for reliable brake fluid testing.

Ideal for Mechanics and DIYers
Compact, easy-to-use tester suited for both professionals and hobbyists.

Praised for Convenient Alerts
Three-color backlight and buzzer alarm enhance safety and usability.
#4
ITEQ Brake Fluid Liquid Tester Pen with 5 LED Indicators, Calibrated For DOT3 DOT4 Brake Fluid

9.3

ITEQ

-18%

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Why we love it

Quickly checks brake fluid quality to prevent accidents.

Easy-to-read LED indicators show water percentage clearly.

Simple and fast results in seconds, very user-friendly.

Main highlights

The LED indicators will show percentage of water in the brake fluid with 3 colors green yellow and red

Test the car brake fluid quality quickly to check whether it’s qualified, which can remind you to change the brake fluid when necessary to avoid traffic accident

Calibrated for cars using DOT4 and DOT3 brake fluids (But DOT3 is almost replaced by DOT4 because DOT4 has better performance)

-18%
#5
Brake Fluid Liquid Tester Pen,1PC DOT 3 DOT 4 DOT 5.1 Brake Fluid Liquid Tester Pen, Car Diagnostic Testing Tool with 5 LED Indicators, Hydraulic Fluid Liquid Oil Moisture Analyzer

9.2

YOGEIER

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Main highlights

Safe driving: This brake fluid tester comes with 5 LED indicators to show the percentage of moisture in the brake fluid. This product can quickly detect the health of the car's brake fluid, provide you with more accurate test results, and remind you to replace the brake fluid when necessary to avoid traffic accidents.

High quality: This brake fluid tester is made of nickel-plated metal probe, which is resistant to oil and oxidation and not easy to corrode. The shell is black matte plastic, better anti-slip and good body texture. The change of conductivity can be used to determine the change of moisture in the brake fluid.

Convenient and quick: This brake fluid tester is easy to use, press the button, insert the test pen, the indicator is accurate to 1%, and you can receive the result in seconds. To save electricity, the test pen will automatically turn off the power after 20 seconds each use to save power.
#6
Aicevoos NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid

9.1

Aicevoos

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Main highlights

WIDE RANGE OF APPLICATIONS: The automotive brake fluid tester is a universal device for most vehicles. It can check the condition of DOT-3, DOT-4, DOT-5.1 brake fluids as well as most synthetic brake fluids. It is extremely easy for personal use and is widely used for private workshops, repair shops and car dealerships.

EASY TO USE: The test procedure is fast and efficient and has a simple control panel. The backlight lights green at 0%-2% data (brake fluid is ready to use). At 2%-3%, the backlight turns yellow and the buzzer sounds slowly (brake fluid needs to be changed). The backlight is red and the buzzer sounds quickly when the data is greater than 3% (brake fluid needs to be changed immediately).

EASY READING: high-sensitivity probe + audible alarm, instant display of results, large screen with three-color backlight, easy to read the measurement results whether day or night.
#7
TESMEN TBF-200 Brake Fluid Tester with 8.5-Inch Corrosion Resistance Gooseneck Probe, High-Precision Brake Fluid Tester Pen with Data Hold, 3 Colors Backlight Alarm for DOT3, DOT4, DOT5.1-Green

8.8

TESMEN

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Main highlights

Efficient Measurement and Quick Readout: TESMEN TBF-200 is equipped with a digital display and a tri-color backlight alarm system. With a measurement range of 0%-4%, it allows you to quickly draw conclusions based on the clearly displayed values

Corrosion-resistant and Clean: TESMEN TBF-200 brake fluid tester features a corrosion-resistant metal probe paired with an 8.5-inch adjustable gooseneck. This design ensures flexible operation while preventing device corrosion and maintaining cleanliness, ultimately extending the tester's lifespan

Compact and Portable for Easy Use: Weighing only 0.15lb and featuring a convenient back clip, the TESMEN TBF-200 is designed for easy portability. Its user-friendly design makes it an essential tool for ensuring your safety and peace of mind
#8
BSBMIEQM Brake Fluid Liquid Tester, Auto Brake Diagnostic Testing Tool, Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Checker Tool for DOT3 DOT4 Brake Fluid，Father'Day Gift

8.5

BSBMIEQM

-11%

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Main highlights

PROTECTS YOU & YOUR CAR : Check the health status of DOT3, DOT4 car brake fluid, Brake Fluid Tester Pen can be used as a digital brake fluid tester suitable for determining brake fluid quality. It will be safe for your driving1

EATY TO USE : Press the button , Insert the tester into reservoir for one second then the tester result will be correctly indicated by LEDs.Repress the button for power off.

5 LEDS : 5 LED display lights the percentage of moisture content in the brake fluid, as the test results are more accurate

-11%
#9
Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips), 1 Pack

8.4

Phoenix Systems

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Main highlights

Identifies potential Brake fluid and coolant related problems before they occur -thereby ensuring your safety and fewer breakdowns

Gives you the peace of mind that your Brake fluid is good and is safely performing its proper function

15 Double-Ended test strips used to test both coolant and Brake fluid
#10
Ohleats Brake Fluid Liquid Tester Pen with 5 LED Indicators, DOT 3 DOT 4 DOT 5.1 Brake Fluid Liquid Tester Pen, Auto Brake Diagnostic Testing Tool Analyzer, Universal Car Accessories

8.3

Ohleats

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Main highlights

【Quick & Convenient】: The brake fluid moisture tester can widely test the percentage of moisture in DOT3, DOT4, DOT5.1 brake fluid. It can check the health status of your car brake fluid quickly, and remind you to change the brake fluid in time. It's extremly convenient for personal use and broadly applied in individual workshops, repair factories and dealer workshops.

【Easy to Use】: The brake fluid tester pen is easy to use with its intuitive design. Simply insert the metal probe into the brake fluid, after a few seconds, the corresponding LED light will light up and display the result. After the test is completed, the test pen will automatically close after 12 seconds.

【5 LED Lights】: This brake fluid tester comes with 5 LED indicators to show the percentage of moisture in the brake fluid. It will show percentage of water in the brake fluid with 3 colors, green, yellow and red. Red indicates the brake fluid needs immediate replacement. Green represents good condition, and yellow indicates the state is acceptable but soon require replacement.

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testing brake fluids

Powerbuilt Brake Fluid Tester, LED Light Quality Indicators for Braking Systems, Test DOT 4 Water Content, Pocket Sized 647626

9.8

Main highlights

Brake Fluid Tester, High Precision Car Brake Fluid Detector, Hydraulic Fluid/Liquid/Oil Moisture Analyzer with LCD Screen Audible Alarm DOT3 DOT4 DOT5.1 Tester,Automotive Replacement Level Sensors

9.6

Main highlights

KAIWEETS Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1

9.5

Why we love it

Main highlights

ITEQ Brake Fluid Liquid Tester Pen with 5 LED Indicators, Calibrated For DOT3 DOT4 Brake Fluid

9.3

Why we love it

Main highlights

Brake Fluid Liquid Tester Pen,1PC DOT 3 DOT 4 DOT 5.1 Brake Fluid Liquid Tester Pen, Car Diagnostic Testing Tool with 5 LED Indicators, Hydraulic Fluid Liquid Oil Moisture Analyzer

9.2

Main highlights

Aicevoos NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid

9.1

Main highlights

TESMEN TBF-200 Brake Fluid Tester with 8.5-Inch Corrosion Resistance Gooseneck Probe, High-Precision Brake Fluid Tester Pen with Data Hold, 3 Colors Backlight Alarm for DOT3, DOT4, DOT5.1-Green

8.8

Main highlights

BSBMIEQM Brake Fluid Liquid Tester, Auto Brake Diagnostic Testing Tool, Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Checker Tool for DOT3 DOT4 Brake Fluid，Father'Day Gift

8.5

Main highlights

Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips), 1 Pack

8.4

Main highlights

Ohleats Brake Fluid Liquid Tester Pen with 5 LED Indicators, DOT 3 DOT 4 DOT 5.1 Brake Fluid Liquid Tester Pen, Auto Brake Diagnostic Testing Tool Analyzer, Universal Car Accessories

8.3

Main highlights

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