Raybestos MC391465 Brake Master Cylinder

Reliable Brake Master Cylinder for Ram 2500 and 3500

The Raybestos Element3; New Brake Master Cylinder MC391465 is engineered to restore precise brake hydraulics for Ram 2500 and 3500 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 0.413-inch diameter for secure installation
• 1.313-inch bore size optimized for brake fluid pressure control
• Primary port thread size: 1/2"-20 for reliable brake line connection
• Secondary port thread size: 7/16"-24 to fit compatible brake systems

Detailed Product Features and Specifications

The Raybestos MC391465 brake master cylinder is designed specifically for Ram 2500 and 3500 trucks, providing a precise fit and reliable brake hydraulics. Its aluminum master cylinder material offers resistance to corrosion and heat, contributing to long-term durability. The two mounting holes, each with a diameter of 0.413 inches, allow for secure attachment to the vehicle’s brake system. The 1.313-inch bore size is calibrated to maintain proper hydraulic pressure, ensuring effective brake response. Threaded ports include a primary port with 1/2"-20 thread and a secondary port with 7/16"-24 thread, compatible with standard brake line fittings used in these Ram models.

About the Element3; New Product Line

The Element3; New line from Raybestos focuses on delivering reliable brake hydraulics components with modern materials and precise engineering. This product line emphasizes durability and fitment accuracy, making it suitable for professional repairs and maintenance on heavy-duty vehicles like the Ram 2500 and 3500. The MC391465 master cylinder is part of this line, reflecting Raybestos’ commitment to quality and performance in brake system components.

Common Applications and Problem Resolution

• Replacement for worn or leaking brake master cylinders on Ram 2500 and 3500
• Restores proper hydraulic pressure for consistent brake pedal feel
• Addresses brake fluid leaks caused by damaged or corroded master cylinders
• Improves brake system responsiveness and safety
• Prevents brake failure due to internal seal wear or bore damage

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Verify that the mounting holes align correctly with the brake booster or firewall mounts on Ram 2500 or 3500 models. Use compatible brake line fittings matching the primary (1/2"-20) and secondary (7/16"-24) port threads to avoid leaks. After installation, bleed the brake system thoroughly to remove air and confirm proper hydraulic pressure. Follow manufacturer torque specifications for mounting bolts to prevent damage.

Quality Assurance and Warranty

Raybestos manufactures the MC391465 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and precise machining contribute to long-term reliability. While specific warranty details should be confirmed with the supplier, Raybestos products typically include coverage against defects in materials and workmanship to support professional repair confidence.