Cardone 10-2596 Brake Master Cylinder

Brake Master Cylinder for GM Full-Size Applications

The Cardone 10-2596 remanufactured brake master cylinder is built to restore hydraulic braking performance with OE-style fit and function. It is engineered for select 1991-1995 Buick, Cadillac, Oldsmobile, and Pontiac full-size vehicles that use the 8-inch master cylinder configuration.

With a 1.00-inch bore, cast-iron construction, and a gray protective finish, this master cylinder is remanufactured to match original equipment dimensions and braking response. The Cardone Brake Master Cylinder line focuses on direct-fit hydraulic replacement parts for dependable service on GM applications.

Key Features

• Part number 10-2596 remanufactured brake master cylinder
• 1.00" bore diameter for OE-style hydraulic performance
• Cast-iron body with protective coating to help resist rust
• New OE-quality seals and cups for leak-resistant operation
• Computer tested for fit and function before release
• Includes reservoir pin kit; reservoir not included
• Two-port design with M10 x 1.0 primary port and M12 x 1.0 secondary port

Detailed Description

Cardone remanufactures this brake master cylinder to original equipment standards, using cleaned and reconditioned castings, new rubber components, and height-gauged piston assemblies to help maintain consistent pedal feel and hydraulic output. The bore is micro-finished to reduce the risk of pitting and corrosion-related wear, while the cast-iron housing receives a protective coating for added durability. This part number 10-2596 is a direct replacement choice for drivers servicing Buick LeSabre and Park Avenue, Pontiac Bonneville, and Cadillac DeVille, Fleetwood, Commercial Chassis, and 60 Special models with the specified 8-inch master cylinder setup.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Low or spongy brake pedal feel
• Internal master cylinder bypass causing pedal drop
• Brake fluid leakage from worn seals or cups
• Corrosion or pitting inside the master cylinder bore
• Poor hydraulic pressure delivery to the brake system

Installation Notes and Tips

Use the brake fluid specified by the original equipment manufacturer and always start with fresh fluid from a sealed container. If the vehicle uses a step-bore master cylinder, bleed it slowly and do not pump the piston rapidly during bench bleeding or on-vehicle bleeding. Before installation, inspect the booster push rod seal, brake hoses, calipers, wheel cylinders, and fluid condition to confirm the rest of the system is clean and free of contamination.

Compatible With 1991-1995 Buick LeSabre, 1991-1994 Buick Park Avenue, 1991-1995 Pontiac Bonneville, 1991-1993 Cadillac DeVille, 1991-1992 Cadillac Fleetwood, 1991-1993 Cadillac Commercial Chassis, 1993 Cadillac 60 Special, 1991 Oldsmobile Delta 88, 1992-1995 Oldsmobile 88, and 1991-1995 Oldsmobile 98 with the specified 8-inch master cylinder configuration.

Quality Assurance

Cardone remanufactured master cylinders are computer tested to verify fit and function, and the remanufacturing process uses new OE-quality seals and cups to support reliable hydraulic performance. The brand also uses vacuum testing on plastic reservoirs where applicable and protective coating on cast-iron housings to help extend service life.