Cardone 54-71034 Power Brake Booster

Vacuum Power Brake Booster for 1991 Applications

The Cardone 54-71034 vacuum power brake booster is a remanufactured replacement built to restore brake assist and pedal response on select 1991 Buick, Cadillac, and Oldsmobile vehicles. It is re-engineered and tested to match original equipment performance, with design updates used where applicable for added durability.

Key Features

• Remanufactured to match O.E. performance
• Dual diaphragm design with a 10.4 in. (264.16 mm) diaphragm diameter
• Steel housing with gray finish
• 100% tested for fit and function
• O.E.-quality seals and check valves installed for reliable operation
• Rust-prohibitive finish helps extend service life
• Master cylinder output rods are pre-adjusted when included
• Master cylinder stud thread size: M10x1.5
• Package contents: booster and instruction manual

Product Details

Cardone Vacuum Power Brake Booster 54-71034 is a remanufactured power brake booster engineered for direct replacement service on vehicles that use a vacuum-assisted brake system. This part is built to restore consistent pedal assist and maintain proper brake feel, making it a practical choice for 1991 Buick Reatta, 1991 Buick Riviera, 1991 Cadillac Eldorado, 1991 Cadillac Seville, and 1991 Oldsmobile Toronado applications. This part cross-references Oldsmobile 18017254 for the same application.

What It Helps Address

• Hard brake pedal feel caused by reduced booster assist
• Inconsistent vacuum-assisted braking response
• Brake pedal effort that has increased over time
• Fitment issues from worn or incorrect replacement boosters
• Noise or performance loss related to aging booster seals and check valves

Installation Notes

Verify the vehicle uses a vacuum power brake booster and confirm master cylinder stud thread size before installation. The booster is supplied with an instruction manual, and the master cylinder output rods are pre-adjusted when included to help streamline installation. For best results, inspect vacuum supply, check valve condition, and brake system components before completing the repair.

Quality Assurance

Cardone remanufactured brake boosters are re-engineered and tested to meet original equipment performance expectations. Each unit is 100% tested for fit and function, and the rust-prohibitive finish is used to help improve durability in service.