KINGBOLEN BF100 Auto Brake Fluid Tester

Keep your braking system performing at its best with the KINGBOLEN BF100 Brake Fluid Tester. Designed for DIYers, technicians, and automotive enthusiasts, this compact tester quickly measures the water content in brake fluid to help determine when fluid replacement is needed and maintain reliable braking performance.

Compatible with DOT3, DOT4, and DOT5.1 brake fluids, the BF100 uses a high-sensitivity probe and clear LED indicators to provide fast, easy-to-read test results.

Compatible with DOT3, DOT4 & DOT5.1 Brake Fluid

The KINGBOLEN BF100 supports the most common brake fluid types, including DOT3, DOT4, and DOT5.1, making it suitable for a wide range of cars, SUVs, trucks, motorcycles, ATVs, golf carts, and more.

High-Sensitivity Testing Probe

Equipped with a durable and corrosion-resistant probe, the BF100 delivers quick response and reliable moisture detection. The flexible probe design makes it easier to access brake fluid reservoirs in different vehicle applications.

5-Level LED Indicator System

The built-in LED display provides a simple visual indication of brake fluid condition by showing different moisture levels, allowing you to quickly identify whether the fluid is safe to use or requires replacement.

Easy Operation & Portable Design

With a compact handheld design and replaceable AAA batteries, the BF100 is convenient for garage use, mobile inspections, and routine vehicle maintenance.

Wide Vehicle Compatibility

Designed for use on various vehicle types, including:

Cars

SUVs

Pickup Trucks

Motorcycles

ATVs

Golf Carts

Other vehicles using DOT3/DOT4/DOT5.1 brake fluid

Why Choose KINGBOLEN BF100 Brake Fluid Tester?

✔ Supports DOT3, DOT4, and DOT5.1 brake fluids

✔ High-precision moisture detection sensor

✔ Quickly checks brake fluid water content

✔ Clear 5-level LED status display

✔ Replaceable AAA battery design

✔ Simple one-button operation

✔ Helps prevent brake performance issues caused by moisture contamination

How to Use KINGBOLEN BF100 Brake Fluid Tester

Step 1: Install 2 AAA batteries into the tester.

Step 2: Press and hold the power button for 3 seconds to turn on the device.

Step 3: Press the power button once to select the brake fluid type (DOT3, DOT4, or DOT5.1).

Step 4: Insert the probe into the brake fluid reservoir. Make sure the probe is clean and dry before testing for accurate results.

Step 5: Check the LED indicators to determine the brake fluid condition.

Step 6: Press and hold the power button for 2 seconds to activate or turn off the built-in LED flashlight.

Step 7: Press and hold the power button for 3 seconds to power off the tester.

Safety Reminder

Brake fluid is typically recommended to be replaced approximately every 2 years, depending on vehicle manufacturer recommendations and driving conditions. Because brake fluid absorbs moisture over time, regular testing helps identify contaminated fluid before it affects braking performance.