Dorman M630599 Brake Master Cylinder

Reliable Brake Master Cylinder for Audi and Volkswagen Models

The Dorman M630599 brake master cylinder is engineered to provide consistent hydraulic pressure for your vehicle's braking system. Designed specifically for select Audi and Volkswagen models, this aluminum master cylinder ensures durability and precise performance without the need for additional mounting hardware or sensors.

• Master cylinder bore diameter: 0.875 inches for accurate hydraulic control
• Constructed from lightweight, corrosion-resistant aluminum material
• Includes two outlets with M12 x 1.0 thread pitch for secure brake line connections
• Does not include reservoir or sensor, allowing compatibility with existing components
• Package contains the master cylinder only, part number M630599

Technical Details and Compatibility

This Dorman brake master cylinder features a 0.875-inch bore diameter, which is critical for maintaining proper brake fluid pressure and pedal feel. The aluminum construction offers a balance of strength and weight savings, helping to reduce overall vehicle weight while resisting corrosion. The unit includes two outlets, both with M12 x 1.0 thread pitch, designed for rearward and secondary outlet connections. Note that this master cylinder does not come with mounting hardware, reservoir, or sensors, making it suitable for vehicles that retain their original components.

Compatible with various Audi and Volkswagen models, including the Audi A3, A3 Quattro, Volkswagen Caddy, Eos, GTI, and R32, this part ensures a precise fit and reliable operation. The Dorman M630599 is an appropriate replacement for vehicles requiring a master cylinder with these specific dimensions and outlet configurations.

Common Applications and Problem Resolution

• Restores proper brake pedal pressure and responsiveness
• Replaces worn or leaking master cylinders causing brake fluid loss
• Addresses spongy or inconsistent brake pedal feel
• Eliminates brake system failure due to internal cylinder wear
• Supports brake system maintenance on compatible Audi and Volkswagen models

Installation Notes and Tips

• Ensure compatibility with your vehicle’s brake system before installation
• Bleed the brake system thoroughly after installation to remove air
• Use appropriate brake fluid as specified by the vehicle manufacturer
• Inspect brake lines and fittings for wear or damage during replacement
• Professional installation is recommended for safety and performance

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications, using durable aluminum material for long-lasting service. While mounting hardware, reservoir, and sensors are not included, the part is designed for straightforward integration with existing brake system components. Please refer to Dorman’s warranty policy for coverage details on the M630599 brake master cylinder.