Raybestos MC39459 Brake Master Cylinder

Reliable Brake Master Cylinder for Precise Hydraulic Control

The Raybestos Element3; New Brake Master Cylinder MC39459 is engineered to deliver consistent brake hydraulic performance. Designed with durable iron construction and precise bore sizing, this master cylinder supports safe and effective braking for various vehicle applications.

• Constructed from robust iron material for long-lasting durability
• 2.000-inch bore size ensuring accurate hydraulic pressure
• Two mounting holes with 0.423-inch diameter for secure installation
• Dual ports with 9/16"-20 and 1/2"-20 thread sizes for versatile brake line connections
• Part number MC39459 for easy identification and compatibility

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 brake system integrity and performance. The MC39459 master cylinder is part of this line, offering a balance of durability and fitment accuracy for professional brake repairs.

Technical Details and Specifications

This brake master cylinder features an iron body designed to withstand the rigors of brake system pressure and heat. The 2.000-inch bore size is calibrated to provide consistent hydraulic force, essential for proper brake pedal feel and stopping power. It includes two mounting holes with a diameter of 0.423 inches, ensuring a secure fit to the vehicle’s firewall or mounting bracket. The master cylinder has two ports: a primary port with a 9/16"-20 thread and a secondary port with a 1/2"-20 thread, allowing compatibility with a range of brake line fittings.

Common Applications and Problem Resolution

• Replacement for worn or leaking brake master cylinders causing brake fluid loss
• Restores proper hydraulic pressure for improved brake pedal response
• Addresses spongy or inconsistent brake pedal feel due to internal cylinder wear
• Prevents brake system failure from corroded or damaged master cylinder components
• Supports brake system rebuilds requiring OEM-spec master cylinder dimensions

Installation Notes and Tips

Ensure the mounting holes align correctly with the vehicle’s brake booster or firewall bracket before installation. Use compatible brake line fittings matching the 9/16"-20 and 1/2"-20 port threads to avoid leaks. After installation, bleed the brake system thoroughly to remove air and verify proper hydraulic pressure. Consult vehicle-specific service manuals for torque specifications and detailed installation procedures.

Quality Assurance and Warranty Information

Raybestos manufactures the MC39459 master cylinder to meet stringent quality standards, ensuring reliable brake system performance. The iron construction and precise bore sizing contribute to durability and consistent operation. Warranty coverage details should be confirmed with the product supplier or manufacturer documentation.