Raybestos MC390977 Brake Master Cylinder

Reliable Brake Master Cylinder for Chrysler and Dodge Vehicles

The Raybestos Element3; New Brake Master Cylinder MC390977 is engineered to restore precise brake hydraulics in select Chrysler and Dodge models. Designed with durable aluminum construction and exact fitment specifications, this master cylinder ensures consistent braking performance for your 300, Charger, or Magnum.

• Constructed from lightweight, corrosion-resistant aluminum
• Features a 1.000-inch bore size for optimal hydraulic pressure
• Includes two mounting holes with a diameter of 0.354 inches for secure installation
• Primary and secondary port threads sized M12x1 for compatibility with brake lines
• Compatible with Chrysler 300, Dodge Charger, and Dodge Magnum models

Detailed Product Features and Specifications

This brake master cylinder, part number MC390977, is crafted from aluminum to provide a balance of strength and weight savings. The 1.000-inch bore size is designed to deliver precise hydraulic pressure to the brake system, ensuring responsive pedal feel. It mounts securely using two holes, each with a 0.354-inch diameter, matching factory specifications for a direct replacement. Both the primary and secondary ports use M12x1 threading, allowing for straightforward connection to the brake hydraulic lines without modification.

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 standards. This product line emphasizes quality materials and precise engineering, making it suitable for professional repairs and maintenance. The MC390977 master cylinder is part of this line, ensuring compatibility and durability for Chrysler and Dodge brake systems.

Common Applications and Problem Resolution

• Restores brake hydraulic pressure in Chrysler 300, Dodge Charger, and Magnum
• Replaces worn or leaking master cylinders causing brake pedal sponginess
• Addresses brake fluid leaks from damaged or corroded master cylinders
• Improves brake system responsiveness and safety
• Solves issues related to inconsistent brake pedal travel or pressure

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Carefully disconnect brake lines from the existing master cylinder, taking care to avoid fluid spills. Verify that the mounting holes and port threads on the MC390977 match the vehicle’s specifications. After installation, bleed the brake system thoroughly to remove air and restore proper hydraulic function. Use appropriate tools to avoid damaging the aluminum body or port threads.

Quality Assurance and Warranty Information

Raybestos manufactures the MC390977 master cylinder to meet stringent quality standards, using corrosion-resistant aluminum and precision machining. This part is designed for durability and consistent performance in brake hydraulic systems. Warranty coverage details should be confirmed with the supplier or manufacturer, as they may vary by region or distributor.