Raybestos MC391390 Brake Master Cylinder

Reliable Brake Master Cylinder for Audi and Volkswagen Models

The Raybestos Element3; New Brake Master Cylinder MC391390 is engineered to provide consistent hydraulic pressure for your vehicle's braking system. Designed specifically for select Audi and Volkswagen models, this master cylinder ensures precise brake control and safety.

• Constructed from durable aluminum for lightweight strength
• Two mounting holes with a diameter of 0.354 inches for secure installation
• Bore size of 0.938 inches optimized for brake fluid flow
• Equipped with two ports featuring M12x1 thread size for reliable hydraulic connections
• Compatible with Audi GTI, Volkswagen Passat, R32, TT, and TT Quattro

About the Raybestos Element3; New Product Line

The Element3; New line from Raybestos focuses on delivering high-quality brake hydraulics components that meet or exceed OEM specifications. This brake master cylinder is part of that line, offering precise engineering and materials designed to maintain consistent brake performance and durability under various driving conditions.

Detailed Product Description

The MC391390 brake master cylinder features an aluminum body that balances strength and weight, contributing to overall vehicle efficiency. Its 0.938-inch bore size is calibrated to provide optimal hydraulic pressure, ensuring responsive braking. The two mounting holes, each with a 0.354-inch diameter, allow for a secure fitment on compatible vehicles. Both primary and secondary ports use M12x1 threading, facilitating straightforward connection to brake lines. This part is specifically designed for use in Audi GTI, Volkswagen Passat, R32, TT, and TT Quattro models, ensuring compatibility and reliable performance.

Common Applications and Issues Addressed

• Restores proper hydraulic pressure in brake systems
• Replaces worn or leaking master cylinders causing brake fluid loss
• Eliminates spongy or unresponsive brake pedal feel
• Prevents brake system failure due to internal seal wear
• Supports brake system maintenance for Audi and Volkswagen vehicles

Installation Notes and Tips

Ensure the brake system is fully depressurized before removing the old master cylinder. Verify that the mounting holes align correctly with the vehicle’s brake booster or firewall. Use proper torque specifications when securing the master cylinder to avoid damage. Bleed the brake system thoroughly after installation to remove air and restore full braking performance. Confirm that the M12x1 threaded ports are compatible with your brake lines and fittings.

Quality Assurance and Warranty

Raybestos manufactures the MC391390 brake master cylinder to meet stringent quality standards, ensuring durability and reliable operation. The Element3; New product line is designed to meet or exceed OEM requirements. Warranty coverage details should be confirmed with the product documentation or supplier.