Raybestos MC391176 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet Cobalt and Pontiac G5

The Raybestos Element3; New Brake Master Cylinder MC391176 is engineered to restore precise brake hydraulics for Chevrolet Cobalt and Pontiac G5 models. Designed with durable aluminum construction and specific mounting features, this master cylinder ensures consistent brake performance and safety.

• Constructed from lightweight, corrosion-resistant aluminum
• Two mounting holes with 0.354-inch diameter for secure installation
• Bore size of 0.875 inches for optimal hydraulic pressure
• Two ports with M10x1 and M12x1 thread sizes for compatibility with brake lines
• Compatible with Chevrolet Cobalt and Pontiac G5 brake systems

Detailed Product Features and Specifications

This Raybestos brake master cylinder, part number MC391176, features a robust aluminum body that resists corrosion and heat, contributing to long service life. The two mounting holes, each with a diameter of 0.354 inches, provide a stable and precise fit to the vehicle’s firewall or mounting bracket. The 0.875-inch bore size is designed to deliver the correct hydraulic pressure needed for effective braking response. Additionally, the master cylinder includes two ports: a primary port with M10x1 threading and a secondary port with M12x1 threading, ensuring compatibility with the brake lines on Chevrolet Cobalt and Pontiac G5 models.

About the Raybestos Element3; New Product Line

The Element3; New line from Raybestos focuses on delivering reliable brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes quality materials and precise engineering to maintain vehicle safety and braking efficiency. The MC391176 master cylinder is part of this line, offering a balance of durability and performance tailored for specific vehicle applications.

Common Applications and Problem Resolution

• Restores proper brake pedal feel and responsiveness
• Eliminates brake fluid leaks from worn or damaged master cylinders
• Resolves inconsistent brake pressure issues
• Addresses spongy or soft brake pedal problems
• Prevents brake system failure due to master cylinder wear

Installation Notes and Tips

When installing the Raybestos MC391176 brake master cylinder, ensure the mounting holes align precisely with the vehicle’s firewall or bracket. Use the correct torque specifications for mounting bolts to avoid damage. Verify that the M10x1 and M12x1 threaded ports match the brake line fittings to prevent leaks. Bleed the brake system thoroughly after installation to remove air and restore proper hydraulic pressure.

Quality Assurance and Warranty

Raybestos manufactures the MC391176 master cylinder to meet stringent quality standards, using corrosion-resistant aluminum and precision machining. This part is backed by Raybestos’ quality assurance processes to ensure reliable performance. Please refer to Raybestos’ official warranty documentation for specific coverage details.