Raybestos MC391154 Brake Master Cylinder

Reliable Brake Master Cylinder for Buick, Cadillac, Chevrolet, and Saab

The Raybestos Element3; New Brake Master Cylinder MC391154 is engineered to restore precise brake hydraulics performance in select Buick, Cadillac, Chevrolet, and Saab 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
• Features a 1.000-inch bore size for optimal hydraulic pressure
• Includes two mounting holes with a diameter of 0.768 inches for secure installation
• Equipped with two ports, both with M12x1 thread size for compatibility with brake lines
• Compatible with Buick LaCrosse, Regal, Verano; Cadillac Allure, XTS; Chevrolet Cruze, Malibu, Cascada; and Saab 9-5 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 is part of that line, offering precise engineering and material quality to maintain consistent brake system performance across multiple vehicle makes and models.

Detailed Product Description

This brake master cylinder (part number MC391154) is crafted from aluminum to provide a balance of strength and corrosion resistance, essential for long-term brake system reliability. The 1.000-inch bore size is designed to generate the correct hydraulic pressure needed for effective braking. With two mounting holes sized at 0.768 inches in diameter, installation aligns with factory mounting points for a secure fit. The two ports, both threaded M12x1, accommodate brake lines for primary and secondary circuits, ensuring proper fluid flow and system integrity.

Common Applications and Issues Addressed

• Restores brake pressure loss due to worn or leaking master cylinders
• Eliminates spongy or unresponsive brake pedal feel
• Resolves brake fluid leaks at the master cylinder ports or mounting points
• Addresses inconsistent braking performance in Buick, Cadillac, Chevrolet, and Saab vehicles
• Replaces damaged or corroded master cylinders to maintain brake system safety

Installation Notes and Tips

• Ensure compatibility with your specific vehicle model and year before installation
• Bleed the brake system thoroughly after installation to remove air and ensure proper hydraulic pressure
• Use appropriate tools to avoid damaging the M12x1 threaded ports during brake line connection
• Inspect mounting holes and hardware for wear or damage before securing the master cylinder

Quality Assurance and Warranty

Raybestos manufactures the MC391154 brake master cylinder to meet stringent quality standards, ensuring reliable performance and durability. The Element3; New product line is designed to match OEM specifications for fit and function. Warranty coverage details should be confirmed with the product documentation or supplier.