Cardone 52-7255 Power Brake Booster

Hydro-Boost Brake Booster for GM Vans

The Cardone 52-7255 is a remanufactured Hydro-Boost power brake booster built for select Chevrolet G30 and GMC G3500 applications. It is re-engineered to match original equipment performance, with 100% testing for fit and function before it leaves the remanufacturing process.

Cardone’s Hydro-Boost Power Brake Booster line focuses on restoring consistent hydraulic brake assist for heavy-duty GM van platforms. This unit is finished in black cast iron and includes an O-ring kit and instruction sheet for service work on the brake booster assembly.

Key Features

• Remanufactured to match O.E. performance
• 100% tested for reliable fit and function
• 100% O.E. quality seals and check valves installed
• Rust-prohibitive finishing process helps extend service life
• Guaranteed fit and function
• Master cylinder output rods are pre-adjusted when included
• Black cast iron construction
• Master cylinder stud thread size: M10 x 1.50

Detailed Description

Cardone 52-7255 is a remanufactured Hydro-Boost power brake booster for 1982-1993 Chevrolet G30 and 1982-1993 GMC G3500 models with brake code JB8 and Hydro-Boost, including dual rear wheel configurations where noted. This part is built for vehicles that use hydraulic brake assist rather than a conventional vacuum booster, making it a direct-service replacement for the original brake booster assembly. If you are replacing a worn Chevrolet G30 brake booster or GMC G3500 Hydro-Boost unit, this part number 52-7255 is engineered to restore original braking response and pedal assist.

This part cross-references Monroe Shocks & Struts (e.g., 172286) for the same application.

What It Helps Address

• Hard brake pedal feel caused by a failing Hydro-Boost unit
• Reduced brake assist from internal seal or check valve wear
• Brake fluid leakage at the booster assembly
• Inconsistent braking response on GM van brake systems
• Service replacement needs for JB8-equipped Chevrolet G30 and GMC G3500 models

Installation Notes and Tips

Verify the vehicle’s Service Parts Identification sticker before ordering to confirm brake code JB8 and Hydro-Boost equipment. This booster is listed without a master cylinder, so transfer and inspect related brake components during service. Confirm the master cylinder stud thread size is M10 x 1.50 and follow the included instruction sheet during installation.

Quality Assurance

Cardone remanufactures this Hydro-Boost power brake booster to original equipment standards and tests every unit for fit and function. The design is inspected for potential improvements during remanufacturing, and the finished part receives a rust-prohibitive coating to support longer service life.