Cardone 54-77101 Power Brake Booster

Vacuum Power Brake Booster for Chevy Applications

The Cardone 54-77101 vacuum power brake booster is a remanufactured replacement built to restore brake assist and pedal response on select Chevrolet Chevy models. It is re-engineered and tested to match original equipment performance, with fit and function verified before release.

Compatible with 2004-2011 Chevrolet Chevy vehicles lacking master cylinders, this Cardone Vacuum Power Brake Booster is a direct-fit service part for brake system repair. The gray steel housing, single-diaphragm design, and 8.47-inch diaphragm diameter support consistent vacuum assist in the original brake booster location.

Key Features

• Remanufactured to match O.E. performance
• Single-diaphragm brake booster design
• 8.47 in. (215.138 mm) diaphragm diameter
• Steel construction with gray finish
• 100% tested for reliable performance
• O.E.-quality seals and check valves installed
• Rust-prohibitive finishing process helps extend service life
• Master cylinder output rods are pre-adjusted when included
• Guaranteed fit and function

Product Details

Cardone’s Vacuum Power Brake Booster line focuses on remanufactured brake assist components that are re-engineered, built, and tested to meet original equipment standards. For this application, the 54-77101 uses a single diaphragm and M8 x 1.25 master cylinder stud thread size, and it includes a booster, instruction manual, and M/C neck seal. This part cross-references Chevrolet 94665601 for the same application.

Use this brake booster when servicing a Chevrolet Chevy brake system that needs restored vacuum assist, stable pedal feel, or replacement of a worn or leaking booster assembly. The remanufactured design helps return the braking system to proper operation without changing the original mounting style.

Common Issues This Part Can Address

• Hard brake pedal feel
• Reduced brake assist from a failing vacuum booster
• Brake pedal effort that has increased over time
• Vacuum leak symptoms at the booster assembly
• Brake system performance loss from a worn original unit

Installation Notes and Tips

Verify master cylinder compatibility, mounting points, and vacuum line condition before installation. The booster is intended for 2004-2011 Chevrolet Chevy applications listed in the fitment data, and the notes specify vehicles lacking master cylinders. Confirm the master cylinder stud thread size is M8 x 1.25 and inspect the brake system for leaks or damaged seals during service.

For best results, follow the included instruction manual and check pedal travel, vacuum supply, and brake assist operation after installation. If the master cylinder is being reused, inspect the neck seal and related components before reassembly.

Quality Assurance

Each Cardone 54-77101 remanufactured power brake booster is 100% tested to confirm fit and function. The unit is built with O.E.-quality seals and check valves and finished with a rust-prohibitive coating to support durability in service.