Cardone 10-2347 Brake Master Cylinder

Brake Master Cylinder for GM W-Body Applications

Cardone Brake Master Cylinder 10-2347 is a remanufactured hydraulic replacement built to match original equipment fit and braking performance. It is designed for select Chevrolet Lumina, Pontiac Grand Prix, Buick Regal, and Oldsmobile Cutlass Supreme applications, including 1990-2001 Chevrolet Lumina and related GM W-body platforms.

Key Features

• Remanufactured to original equipment specifications for fit and function
• Aluminum master cylinder body with gray finish
• 0.944 in. bore diameter for proper hydraulic response
• 4-port design with M13 x 1.5, M11 x 1.5 primary ports and M10 x 1.0, M12 x 1.0 secondary ports
• New O.E.-quality seals and cups used during remanufacturing
• Computer tested for fit, function, and leak-free operation
• Reservoir pin kit included; reservoir not included

Product Details

Cardone 10-2347 is part of the Brake Master Cylinder line, focused on restoring consistent pedal feel and hydraulic pressure in the brake system. The remanufacturing process replaces wear components with new O.E.-quality seals and cups, while the bore is finished to tight micro-finish standards to help reduce pitting-related failure. This master cylinder is a direct-fit solution for drivers searching for a brake master cylinder for 1990-2001 Chevrolet Lumina, a replacement master cylinder for 1988-1993 Pontiac Grand Prix, or a brake master cylinder for 1988-1991 Buick Regal and 1988-1993 Oldsmobile Cutlass Supreme.

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 bypass in the master cylinder
• Brake fluid leakage from worn seals or cups
• Uneven hydraulic pressure at the brake system
• Hard pedal concerns caused by master cylinder wear or contamination

Installation Notes and Tips

Before installation, verify the brake fluid type specified on the original master cylinder lid and use fresh fluid from a sealed container. Bench bleeding is recommended before the unit is installed, and step-bore systems require a slow depress-and-release bleeding process rather than pumping the piston. Inspect the booster push rod seal, brake hoses, calipers, wheel cylinders, and fluid condition if the original failure involved leakage, contamination, or uneven braking.

Quality Assurance

Each Cardone remanufactured master cylinder is computer tested to confirm fit and function. Cast-iron versions in this product family receive a protective coating to help resist rust, and all rubber components are selected to meet S.A.E. specifications. The remanufacturing process also reduces raw material and energy use compared with producing a new part.

• Fits 1990-2001 Chevrolet Lumina, N/A
• Fits 1988-1993 Pontiac Grand Prix, N/A
• Fits 1996 Pontiac Grand Prix, N/A
• Fits 1988-1991 Buick Regal, N/A
• Fits 1992-1993 Buick Regal, N/A
• Fits 1988-1993 Oldsmobile Cutlass Supreme, N/A