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A black digital brake fluid tester with a flexible hose and three-color backlight is shown.
Icons highlighting six major advantages of a digital brake fluid tester including high-precision probe, multiple fluid types,
Instruction for use showing a brake fluid moisture tester pen being used on a brake fluid system.
A close-up view of a high-precision probe equipped with a flexible metal hose for fluid testing.
A digital brake fluid tester with a metal hose and probe, featuring a three-color backlight.
A digital brake fluid tester with a metal hose and three-color backlight indicator showing results for DOT 3, DOT 4, and DOT
A red digital brake fluid tester probe with a backlight indicator and sound alarm is shown against a dark background.
Six sides showcase of a black digital brake fluid tester device.
A black digital brake fluid tester with an orange grip and various labeled components shown on a dark background.
A digital brake fluid tester with a red backlight indicator showing results for DOT3, DOT4, and DOT5.
A black digital brake fluid tester with a flexible hose and various indicators for checking DOT3, DOT4, and DOT5.1 fluids.
A red digital brake fluid tester device with various indicators for DOT3, DOT4, and DOT5.1 fluids.
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Digital Brake Fluid Tester for DOT3, DOT4 & DOT5.1

Regular price $48.99 Sale price $40.99 – $42.99

Why customers love it

Know your brake fluid's health in seconds

This digital brake fluid tester provides a quick and accurate way to check the moisture content of your vehicle's brake fluid, helping you maintain optimal braking performance and safety.

  • High-precision probe delivers accurate moisture readings
  • Audio and visual alarms signal when fluid needs replacement
  • Three-color backlit LCD display for clear visibility
  • Built-in flashlight for working in low-light areas
  • Data hold function locks readings for convenient review
  • Auto power-off conserves battery life
A black digital brake fluid tester with a flexible hose and three-color backlight is shown.

Why you'll appreciate this tester

Accurate readings

The high-precision probe delivers accurate moisture readings so you can trust the condition check.

Clear alerts

Audio and visual alarms signal when fluid needs replacement, making results easy to interpret.

Low-light ready

A built-in flashlight helps you work in low-light areas under the hood or in the garage.

Hold your results

The data hold function locks readings for convenient review after you remove the probe.

Setup

Simple to use

No electrician, no wiring, no fuss.

  1. Test the fluid

    Insert the high-precision probe into the brake fluid to measure its moisture content quickly and accurately.

  2. Read the result

    Watch the three-color backlit LCD and listen for audio and visual alarms that signal when fluid needs replacement.

  3. Review and save power

    Use the data hold function to lock the reading for convenient review; auto power-off conserves battery life when done.

Specs

The details that matter

Built to last outdoors, season after season.

Product type
Digital brake fluid tester
Compatibility
DOT3, DOT4, DOT5.1
Display
Three-color backlit LCD
Probe
High-precision
Power
Auto power-off

Our worry-free shopping promise

If your order arrives damaged, defective, or not as described, contact us within 14 days and we will make it right with a replacement or refund.

Frequently asked questions

Everything you might want to know before you order.

Which brake fluid types does this tester work with?

This digital brake fluid tester is compatible with DOT3, DOT4, and DOT5.1 brake fluids.

How will I know when my brake fluid needs replacing?

Audio and visual alarms signal when the fluid needs replacement, so you can act quickly without misreading the display.

Can I review the reading after testing?

The data hold function locks readings for convenient review, letting you check the result after the probe is removed.

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Does the tester save battery when idle?

Auto power-off conserves battery life, so the tester shuts down automatically when not in use.

Shipping & returns

Shipping

  • Delivers to United States (based on your selected country/region).
  • Estimated delivery: 3–15 business days after dispatch.
  • Shipping cost: Free.

Returns

You can request a return within 14 days after delivery. Standard returns have a €4.00 EUR (approximately $4.66 USD) flat-rate return shipping fee, deducted from your refund. Return shipping is free for items that arrived damaged, defective, or incorrect. Items should be unused and in original packaging where possible. Contact us before sending anything back.