Raybestos MC390277 Brake Master Cylinder

Overview of Raybestos Element3; New Brake Master Cylinder MC390277

The Raybestos Element3; New Brake Master Cylinder MC390277 is engineered for reliable brake hydraulics performance in Chevrolet Cavalier and Pontiac Sunfire models. Designed with precision, this aluminum master cylinder ensures consistent braking response and durability.

• Constructed from lightweight aluminum for corrosion resistance
• Two mounting holes with 0.433-inch diameter for secure installation
• Bore size of 0.875 inches for optimal hydraulic pressure
• Two ports with M10x1 primary port thread for fluid connection
• Compatible with Chevrolet Cavalier and Pontiac Sunfire vehicles

Detailed Product Features and Specifications

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 construction offers a balance of strength and corrosion resistance, extending the service life of the component. It includes two mounting holes, each with a diameter of 0.433 inches, ensuring a secure fit during installation. The master cylinder has two ports, with the primary port threaded M10x1, facilitating reliable brake fluid flow and connection to the brake lines.

About the Element3; New Product Line

The Element3; New line by Raybestos focuses on delivering brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes material quality and precise engineering to provide dependable brake system performance. The MC390277 master cylinder is part of this line, offering a direct replacement solution for specific Chevrolet and Pontiac models.

Applications and Common Issues Addressed

• Restores proper brake pedal feel and responsiveness in Chevrolet Cavalier and Pontiac Sunfire
• Replaces worn or leaking master cylinders causing brake fluid loss
• Eliminates spongy or inconsistent braking performance
• Addresses brake system pressure issues due to bore wear or damage
• Prevents brake failure caused by internal seal deterioration

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Carefully remove the old master cylinder and inspect brake lines for damage. Use the two 0.433-inch mounting holes to align the MC390277 master cylinder properly. Verify that the M10x1 threaded ports are clean and free of debris before connecting brake lines. After installation, bleed the brake system thoroughly to remove air and restore proper hydraulic pressure.

Quality Assurance and Warranty

Raybestos manufactures the MC390277 brake master cylinder to meet strict quality standards, ensuring reliable operation in Chevrolet Cavalier and Pontiac Sunfire vehicles. The Element3; New product line is designed for durability and consistent performance. Warranty details should be confirmed with the point of purchase or manufacturer documentation.