LED Brake Fluid Tester Pen – DOT 3, 4 & 5 Compatible

Know Your Brake Fluid Is Safe — In Under 60 Seconds

Degraded brake fluid is one of the most overlooked safety risks on the road. This compact LED tester pen tells you instantly whether your brake fluid is still effective or needs replacing — no lab, no guesswork, no expensive garage visit.

How It Works

Simply insert the probe into your brake fluid reservoir. The LED indicator gives you an instant reading:

• Green — fluid is in good condition
• Yellow — fluid is degrading, monitor closely
• Red — fluid needs replacing immediately

Specifications

• Compatible with DOT 3, DOT 4, and DOT 5 brake fluid
• Sturdy plastic construction for long-term use
• Compact pen design — fits easily in a toolbox or glovebox

A must-have for any driver who takes vehicle safety seriously — and a great upsell for any automotive toolkit.