Raybestos MC391568 Brake Master Cylinder

Reliable Brake Master Cylinder for Buick, Cadillac, and Oldsmobile

The Raybestos Element3; New Brake Master Cylinder MC391568 is engineered to restore precise brake hydraulics performance in select Buick, Cadillac, and Oldsmobile models. Designed for durability and consistent operation, this master cylinder supports safe braking in vehicles like the Eldorado, Riviera, Seville, and Toronado.

Key Features of Raybestos MC391568 Brake Master Cylinder

• Constructed from lightweight, corrosion-resistant aluminum material
• Includes master cylinder cap and reservoir for fluid containment
• Equipped with two mounting holes for secure installation
• Primary outlet thread size: 1/2-20; secondary outlet thread size: 9/16-18
• Does not include brake booster, push rod, dust boot, bleeder hoses, sensor, or mounting bracket

About the Raybestos Element3; New Product Line

The Element3; New line from Raybestos focuses on delivering reliable brake hydraulics components with modern materials and precise manufacturing. This brake master cylinder MC391568 is part of that line, offering an aluminum construction that balances strength and weight. The inclusion of a reservoir and master cylinder cap ensures compatibility with original brake system designs in classic Buick, Cadillac, and Oldsmobile vehicles.

Detailed Product Description

This brake master cylinder is designed specifically for use in Buick Eldorado, Cadillac Riviera, Seville, and Oldsmobile Toronado models. Its aluminum body provides resistance to corrosion and heat, contributing to long service life. The included reservoir and master cylinder cap facilitate proper brake fluid management, while the two mounting holes ensure a secure fit. Thread sizes for primary and secondary outlets are 1/2-20 and 9/16-18 respectively, matching OEM specifications for brake line connections. Note that this part does not include a brake booster or push rod, so those components must be sourced separately if needed.

Common Issues Addressed by This Brake Master Cylinder

• Brake pedal sinking or sponginess due to master cylinder wear
• Brake fluid leaks from a damaged or corroded master cylinder
• Inconsistent brake pressure affecting stopping performance
• Replacement of a failing or seized master cylinder in Buick, Cadillac, or Oldsmobile models
• Restoring brake hydraulics in classic Eldorado, Riviera, Seville, or Toronado vehicles

Installation Notes and Tips

Ensure the brake system is properly bled after installation to remove air and maintain brake responsiveness. Verify that the mounting holes align correctly with the vehicle’s firewall or mounting bracket. Use compatible brake fluid as specified by the vehicle manufacturer. Since this master cylinder does not include a brake booster or push rod, confirm those components are in good condition or replaced as necessary.

Quality Assurance and Warranty

Raybestos manufactures the MC391568 brake master cylinder to meet or exceed OEM standards for fit and function. The aluminum construction and included reservoir and cap contribute to reliable brake system performance. Warranty details should be confirmed with the distributor or retailer, as coverage may vary.