Centric 130.62039 Brake Master Cylinder

Reliable Brake Master Cylinder for Buick, Chevrolet, and More

The Centric Premium Brake Master Cylinder 130.62039 is engineered to restore precise brake hydraulics for select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models. Designed with durable aluminum construction and a removable plastic reservoir, this master cylinder ensures consistent brake fluid management and reliable stopping power.

• Aluminum master cylinder body for strength and corrosion resistance
• Single removable plastic reservoir included for easy maintenance
• Stepped bore design with primary bore diameter of 31.8 mm and secondary bore diameter of 22.2 mm
• Includes master cylinder cap and bleeder screw for proper system sealing and bleeding
• Four ports with bubble flare type primary outlet thread (M11-1.50) for secure hydraulic connections
• Compatible with multiple GM models including Buick Century, Chevrolet Cavalier, and Pontiac Sunbird

About Centric Premium Brake Master Cylinders

The Centric Premium Brake Master Cylinders line focuses on delivering high-quality brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes durable materials such as aluminum for the master cylinder and plastic for the reservoir, combined with precise bore dimensions and reliable sealing components. The 130.62039 part number is part of this line, offering a balance of performance and longevity for GM vehicles requiring a stepped bore master cylinder design.

Product Details and Specifications

This brake master cylinder features a stepped bore design with a primary bore diameter of 31.8 mm (1.252 inches) and a secondary bore diameter of 22.2 mm (0.874 inches), optimizing hydraulic pressure distribution. The included single reservoir is made of plastic and is removable for convenient servicing. The master cylinder cap and bleeder screw are included to facilitate proper brake fluid sealing and bleeding during installation or maintenance. The unit does not include a brake booster, push rod, mounting hardware, or mounting bracket, so these components must be sourced separately if needed.

Compatible Vehicles and Applications

• Buick Century, Skylark, and Regal models
• Cadillac models requiring stepped bore master cylinders
• Chevrolet Cavalier, Celebrity, and Omega
• Oldsmobile Firenza and J2000
• Pontiac Citation, Phoenix, and Sunbird

Common Issues Addressed by This Master Cylinder

• Brake pedal sinking or sponginess due to internal seal wear
• Brake fluid leaks from a damaged or corroded master cylinder
• Inconsistent brake pressure affecting stopping performance
• Reservoir cracks or leaks causing fluid loss
• Difficulty bleeding brakes due to faulty bleeder screw or ports

Installation Notes and Tips

Ensure the brake system is fully depressurized before removing the old master cylinder. This part requires proper alignment with the brake booster and secure connection of all hydraulic lines to the four ports. Use the included bleeder screw and master cylinder cap to maintain system integrity. Since mounting hardware and push rod are not included, verify compatibility with your vehicle’s existing components. Bleed the brake system thoroughly after installation to remove air and ensure optimal brake performance.

Quality Assurance and Warranty

Centric Premium Brake Master Cylinders are manufactured to meet strict quality standards, using corrosion-resistant aluminum and durable plastic materials. The 130.62039 part number undergoes rigorous testing to ensure reliable hydraulic function and fitment accuracy. Warranty coverage details should be confirmed with the distributor or manufacturer, as they may vary by region.