Cupbunny 3L Brake Fluid Bleeder Kit with 1L Catch Bottle — One-Person Bleeding Tool

Effortless Brake Fluid Bleeding, Made for One

Meet the Cupbunny 3L Brake Fluid Bleeder Kit, a complete system designed for single-person operation. It lets you flush old brake fluid and remove air from the brake and clutch lines with precision. The 3L pressure tank stores fresh fluid, while a 1L waste bottle catches used fluid, helping you keep the workspace clean and organized.

What’s included

• 3L pressure tank
• 1L waste bottle with hanging chain
• 4 master cylinder adapters for broad compatibility
• cap wrench for easy tightening
• black suction tube
• 3 spare O-rings

Universal fit for many vehicles

The kit ships with four precision adapters to cover a wide range of models: 43.5 mm for many Chrysler, Dodge, and Jeep vehicles; 45 mm for most European cars; 49.5 mm for select GM, Buick, and Mazda models; and 50.7 mm for many Ford, Nissan, Hyundai, and Subaru vehicles. Please measure your master cylinder cap to confirm the correct fit. This setup helps create a secure, leak-proof seal across multiple makes and generations.

Pro-grade design for a clean workspace

Built with reinforced materials, the system is designed for repeated use. Upgraded adapter caps and a thickened tank improve sealing and minimize spills. The semi-transparent tank lets you monitor fluid levels at a glance, while the waste bottle includes a hanging hook to keep your hands free for other tasks.

Safe, accurate bleeding at your own pace

The integrated pressure gauge offers a clear PSI/Bar readout, helping you maintain typical working pressure (roughly 10–15 PSI) during the process. A built-in pressure relief valve lets you release pressure safely before disconnecting the adapter, reducing the risk of spray or spills.

Everything you need in one kit

In addition to the 3L tank and 1L waste bottle, you receive four master cylinder adapters, a cap wrench, a suction tube, and spare O-rings. This makes the kit a practical solution for DIY enthusiasts and home mechanics aiming for professional-grade brake and clutch fluid maintenance.

Notes on use

These features offer flexibility and practical benefits for routine brake maintenance. Always follow your vehicle’s service manual and safety guidelines when performing fluid bleeding tasks.