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🚗 Don’t just drive—diagnose like a pro and avoid costly brake failures!
The KINGBOLEN Brake Fluid Tester BF200 is a professional-grade, high-precision device designed to instantly detect moisture levels in DOT3, DOT4, and DOT5.1 brake fluids. Featuring a flexible gooseneck probe with built-in flashlight, a clear backlit LCD screen, and an audible alarm, it empowers millennial managers and car enthusiasts to maintain brake safety with confidence. Compact, durable, and easy to use, it’s the essential tool for anyone serious about vehicle maintenance and avoiding unexpected brake issues.










| ASIN | B08PFCLZSV |
| Brand Name | KINGBOLEN |
| Customer Reviews | 4.4 4.4 out of 5 stars (552) |
| Item Dimensions | 10 x 2 x 2.7 inches |
| Item Weight | 150 Grams |
| Manufacturer | KINGBOLEN |
| Material Type | Acrylonitrile Butadiene Styrene (ABS) |
| UPC | 724190799116 |
T**G
Easy and accurate
Installed a AAA battery, dropped it in the brake fluid reservoir, read less than 2% water, Done. Easy peasy. Digital readout is clear and menu buttons are simple.
G**W
The closest device to a mechanics shop tool and very accurate after.
I was in need of a fluid tester. This as my 2nd choice. After reviewing others, I decided to buy this one. It’s very good quality and seems be very accurate after testing the master cylinder and coapring it to a bottle of Dot 3. I like the flexibility to measure Dot 4 & 5.
C**Y
Works on standard fluid
I bought this to test the racing brake fluid in my vehicle and it does not register any racing brake fluid. I have tried DOT 3 and 4 non-racing fluid and it detects the moisture just fine but when I dip it into the racing variety of the fluid, it reads nothing and acts like it does not detect it. Something to keep in mind if you’re using this for Performance capacities.
T**I
Gives you good interesting information.
It appears to work well. I was curious about my brake fluid on my road bike and my track bikes. I changed the brake fluid on my track bikes frequently so less of a need to measure, but I was curious. Also useful for my cars.
G**K
Saves many $$$
I test the fluid on all three of our vehicles annually. This has saved me hundreds of $$ for unneeded fluid changes. Easy to use. Highly recommends.
A**H
Good tool
Works good and battery still works after months
C**R
Cheap meter, not sure if it is accurate or not
Not sure how accurate this is. How would I verify? It is not certified by any meaningful authority. I have a 2019 car with the original dot 4 fluid, that tests out "A-OK" with this meter. After 6 years, I have my doubts that the fluid is still good. OTOH if I stick it in tap water, it reads "not ok". I think if I did it over, I would spend more money for something I can trust.
A**R
Outstanding quality and price
Outstanding quality Tool
D**E
Works good.
L**A
Funciona bien!
1**I
جهاز جميع نتائجه خاطئه. ولم يقم بارسال المندوب لاستلام المنتج بعد ان قمت باسترجاعه
M**F
Great for checking brake fluid in containers that have just laying around in storage.
D**O
Buen producto 👍
Trustpilot
1 month ago
3 weeks ago