Raybestos MC39580 Brake Master Cylinder

Reliable Brake Master Cylinder for Buick, Cadillac, Oldsmobile, and Pontiac

The Raybestos Element3; New Brake Master Cylinder MC39580 is engineered to restore precise brake hydraulics performance in select Buick, Cadillac, Oldsmobile, and Pontiac models. Designed with durable aluminum construction and exact fitment specifications, this master cylinder ensures consistent braking response and safety.

• Constructed from lightweight, corrosion-resistant aluminum
• Two mounting holes with 0.433-inch diameter for secure installation
• 24.000 mm bore size optimized for proper hydraulic pressure
• Four ports including M11x1.5 primary and M12x1 secondary port threads
• Compatible with Buick LeSabre, Pontiac Bonneville, Cadillac DeVille, Oldsmobile Delta 88, and related models

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 brake master cylinder MC39580 is part of that line, offering precise engineering and material quality to maintain brake system integrity in classic and late-model vehicles from Buick, Cadillac, Oldsmobile, and Pontiac.

Technical Details and Compatibility

This brake master cylinder features a 24.000 mm bore size, which is critical for maintaining the correct hydraulic pressure in the brake system. The aluminum master cylinder material provides a balance of strength and corrosion resistance, extending the service life of the component. With two mounting holes sized at 0.433 inches in diameter, installation aligns with factory mounting points. The unit includes four ports, with primary and secondary port threads sized M11x1.5 and M12x1 respectively, ensuring compatibility with the brake lines on specified vehicles.

Common Applications and Problem Resolution

• Restores brake pressure loss in Buick LeSabre and Pontiac Bonneville models
• Replaces worn or leaking master cylinders in Cadillac DeVille and Fleetwood
• Addresses brake pedal sponginess or sinking issues in Oldsmobile Delta 88
• Corrects hydraulic fluid leaks affecting brake performance
• Ensures proper brake system function on commercial chassis applications

Installation Notes and Tips

Ensure the brake system is fully depressurized before removing the old master cylinder. Verify that the mounting holes and port threads match the vehicle’s specifications to avoid leaks. Use proper brake fluid and bleed the system thoroughly after installation to remove air and restore full braking efficiency. Consult vehicle-specific service manuals for torque specifications and detailed procedures.

Quality Assurance and Warranty

Raybestos manufactures the MC39580 brake master cylinder to meet stringent quality standards, using durable aluminum material and precise machining. While specific warranty details are not provided here, Raybestos products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Refer to Raybestos documentation for exact warranty terms.