Raybestos MC390745 Brake Master Cylinder

Reliable Brake Master Cylinder for Chrysler and Dodge Vehicles

The Raybestos Element3; New Brake Master Cylinder MC390745 is engineered to restore precise brake hydraulics for Chrysler 300M, Dodge Concorde, and Intrepid models. Designed with durable aluminum construction and exact fitment specifications, this master cylinder ensures consistent braking performance.

• 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 port thread size M12x1 and secondary port thread size M10x1 for proper brake line connections
• Compatible with Chrysler 300M, Dodge Concorde, and Intrepid models

Detailed Product Features and Specifications

This Raybestos brake master cylinder (part number MC390745) is crafted from aluminum to provide a balance of strength and corrosion resistance, essential for brake hydraulics components. The 1.000-inch bore size is designed to deliver the correct hydraulic pressure needed for effective braking response. It mounts securely using two holes, each with a diameter of 0.354 inches, ensuring a precise fit on compatible vehicles. The master cylinder includes a primary port with M12x1 threading and a secondary port with M10x1 threading, allowing for proper brake line attachment and fluid flow management.

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 material quality and precise engineering to maintain vehicle safety and performance. The MC390745 master cylinder is part of this line, offering a direct replacement solution for select Chrysler and Dodge models.

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 assembly
• Improves overall brake system responsiveness and safety
• Addresses brake failure symptoms in Chrysler 300M, Dodge Concorde, and Intrepid

Installation Notes and Tips

Ensure the vehicle is properly supported and the brake system is depressurized before installation. Verify that the mounting holes align correctly with the vehicle’s brake booster or firewall. Use the specified port thread sizes (M12x1 primary, M10x1 secondary) to connect brake lines securely, avoiding cross-threading. After installation, bleed the brake system thoroughly to remove air and confirm proper hydraulic function.

Quality Assurance and Warranty Information

Raybestos manufactures the MC390745 brake master cylinder to meet stringent quality standards. The aluminum construction and precise machining contribute to long-term durability. While specific warranty details should be confirmed at the point of purchase, Raybestos products typically include coverage against manufacturing defects to ensure reliability in service.