Raybestos MC390276 Brake Master Cylinder

Reliable Brake Master Cylinder for Buick, Chevrolet, Oldsmobile, Pontiac

The Raybestos Element3; New Brake Master Cylinder MC390276 is engineered to restore precise brake hydraulics for select Buick, Chevrolet, Oldsmobile, and Pontiac models. Designed with durable aluminum construction and exact fitment specifications, this master cylinder ensures consistent braking performance.

• Constructed from lightweight, corrosion-resistant aluminum
• Two mounting holes with 0.419-inch diameter for secure installation
• Bore size of 0.875 inches for optimal hydraulic pressure
• Two ports with M10x1 thread size for primary and secondary connections
• Compatible with Buick Achieva, Chevrolet Corsica, Pontiac Grand Am, and Oldsmobile Skylark

Detailed Specifications and Features

This brake master cylinder features a 0.875-inch bore size, which is critical for maintaining proper hydraulic pressure in the brake system. The aluminum master cylinder material offers a balance of strength and corrosion resistance, contributing to long-term durability. It includes two mounting holes, each with a diameter of 0.419 inches, ensuring a secure and precise fit. Both the primary and secondary ports use M10x1 threading, facilitating straightforward connection to brake lines. The part number MC390276 corresponds specifically to this configuration, making it suitable for the listed vehicle models.

About the Raybestos Element3; New Product Line

The Element3; New line by Raybestos focuses on delivering reliable brake hydraulics components with modern materials and precise engineering. This product line emphasizes quality and fitment accuracy, providing replacement parts that meet or exceed OEM standards. The MC390276 brake master cylinder is part of this line, designed to offer consistent performance and durability for compatible Buick, Chevrolet, Oldsmobile, and Pontiac vehicles.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or damaged master cylinder
• Eliminates brake pedal sinking or sponginess
• Resolves fluid leaks from the master cylinder area
• Improves brake system responsiveness and safety
• Replaces corroded or cracked master cylinder housing

Installation Notes and Tips

Ensure the brake system is properly bled after installation to remove air and maintain hydraulic integrity. Verify that mounting holes align correctly with the vehicle’s firewall or mounting bracket. Use compatible brake fluid as specified by the vehicle manufacturer. Inspect brake lines and fittings for wear or damage during installation and replace if necessary. Follow torque specifications for mounting bolts to avoid damage or leaks.

Quality Assurance and Warranty

Raybestos Element3; New brake master cylinders are manufactured to meet stringent quality standards. The aluminum construction and precise machining contribute to reliable performance and longevity. This part is backed by Raybestos’ quality assurance protocols, ensuring it meets OEM fit and function requirements. Warranty coverage details should be confirmed with the distributor or manufacturer.