Cardone 54-71056 Power Brake Booster

Vacuum Power Brake Booster for GM Trucks

The Cardone 54-71056 vacuum power brake booster is a remanufactured replacement for select Chevrolet and GMC full-size trucks and Suburban models with brake code JB7. Built to match original equipment performance, it is tested for fit and function before it leaves the factory.

This Cardone Vacuum Power Brake Booster line focuses on OE-style restoration for braking systems that need consistent pedal assist and dependable vacuum operation. The remanufactured design uses upgraded finishing and replacement sealing components to support long-term service on classic GM applications.

Key Features

• Remanufactured to match O.E. performance
• Dual-diaphragm design with a 10.4 in. diaphragm diameter
• 100% tested for reliable performance and proper function
• O.E.-quality seals and check valves installed on every unit
• Rust-prohibitive finish helps extend service life
• Guaranteed fit and function for listed applications
• Steel construction with gray finish
• Master cylinder output rods are pre-adjusted when included

Product Details

Cardone part number 54-71056 is a remanufactured vacuum power brake booster for Chevrolet and GMC vehicles equipped with brake code JB7. It is engineered for direct replacement use on select C/K-series trucks and Suburban models, including 1981-1991 Chevrolet and GMC applications listed in the fitment data. This part cross-references Chevrolet and GMC OE numbers 18008289 and 18011339 for the same application.

What This Brake Booster Helps Address

• Hard brake pedal feel caused by a weak booster
• Reduced vacuum assist during braking
• Brake response issues on JB7-equipped GM trucks and Suburbans
• Replacement needs after booster diaphragm or seal wear
• Corrosion-related booster housing deterioration

Installation Notes

• Compatible With 1981-1991 Chevrolet and GMC JB7 brake-code applications listed in the fitment table
• Excludes the master cylinder
• Some applications require pedal rod # C17 and specific brake-code verification on the Service Parts Identification sticker
• Confirm master cylinder stud thread size M10x1.5 before installation
• Review the included instruction manual before removal and installation

Quality Assurance

Each Cardone 54-71056 booster is remanufactured, inspected, and 100% tested to verify proper operation, fit, and function. The unit is built with OE-quality sealing components and a rust-resistant finish to support dependable service on Chevrolet and GMC brake systems.

• Fits 1989-1991 Chevrolet R1500 Suburban, N/A
• Fits 1989-1991 Chevrolet R2500 Suburban, N/A
• Fits 1989-1991 Chevrolet V1500 Suburban, N/A
• Fits 1989-1991 Chevrolet V2500 Suburban, N/A
• Fits 1987-1991 GMC R1500 Suburban, N/A
• Fits 1987-1991 GMC R2500 Suburban, N/A
• Fits 1987-1991 GMC V1500 Suburban, N/A
• Fits 1987-1991 GMC V2500 Suburban, N/A
• Fits 1989 Chevrolet R2500, N/A
• Fits 1988-1989 GMC R2500, N/A
• Fits 1987-1988 Chevrolet R10 Suburban, N/A
• Fits 1988 Chevrolet R20, N/A
• Fits 1987-1988 Chevrolet R20 Suburban, N/A
• Fits 1987-1988 Chevrolet V10 Suburban, N/A
• Fits 1987-1988 Chevrolet V20 Suburban, N/A
• Fits 1988 GMC R2500, N/A
• Fits 1987 Chevrolet R20, N/A
• Fits 1987 Chevrolet V20, N/A
• Fits 1987 GMC R2500, N/A
• Fits 1987 GMC V2500, N/A
• Fits 1981-1986 Chevrolet C10 Suburban, N/A
• Fits 1982-1986 Chevrolet C20, N/A
• Fits 1981-1986 Chevrolet C20 Suburban, N/A
• Fits 1981-1986 Chevrolet K10 Suburban, N/A
• Fits 1982-1986 Chevrolet K20, N/A
• Fits 1981-1986 Chevrolet K20 Suburban, N/A
• Fits 1981-1986 GMC C1500 Suburban, N/A
• Fits 1982-1986 GMC C2500, N/A
• Fits 1981-1986 GMC C2500 Suburban, N/A
• Fits 1981-1986 GMC K1500 Suburban, N/A
• Fits 1982-1986 GMC K2500, N/A
• Fits 1981-1986 GMC K2500 Suburban, N/A
• Fits 1981 Chevrolet C20, N/A
• Fits 1981 Chevrolet K20, N/A
• Fits 1981 GMC C2500, N/A
• Fits 1981 GMC K2500, N/A