Dorman M630204 Brake Master Cylinder

Reliable Brake Master Cylinder for Audi and Volkswagen Models

The Dorman M630204 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: 1 inch for optimal hydraulic control
• Constructed from lightweight, corrosion-resistant aluminum
• Includes two outlets with M12 x 1.0 thread pitch for secure brake line connections
• Does not include reservoir or mounting hardware, allowing compatibility with existing components
• Package contains the master cylinder only, part number M630204

Technical Details and Compatibility

This brake master cylinder features a 1-inch bore diameter, crafted from aluminum to resist corrosion and maintain structural integrity under high pressure. It includes two outlets, both with M12 x 1.0 thread pitch, suitable for rearward and secondary outlet connections. The absence of a reservoir and sensor means it is designed to integrate seamlessly with your vehicle's existing brake system components.

The Dorman M630204 is compatible with a range of Audi and Volkswagen vehicles, including the Audi A4, A4 Quattro, A6, A6 Quattro, Allroad Quattro, S4, S6, and the Volkswagen Passat. This ensures a precise fit and reliable operation for these specific models.

Common Applications and Problem Resolution

• Restores proper hydraulic pressure in brake systems experiencing spongy or unresponsive brakes
• Replaces master cylinders with internal leaks or worn seals causing brake fluid loss
• Addresses brake pedal sinking or inconsistent brake feel
• Solves issues related to master cylinder bore wear or corrosion
• Provides a direct replacement for vehicles requiring a 1-inch bore aluminum master cylinder

Installation Notes and Tips

Installation of the Dorman M630204 brake master cylinder requires removal of the old master cylinder and proper connection of brake lines to the two M12 x 1.0 threaded outlets. Since mounting hardware and reservoir are not included, retain existing components or source separately if needed. Bleeding the brake system thoroughly after installation is essential to remove air and ensure optimal brake performance.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications, using durable aluminum construction for long-lasting service. While mounting hardware and sensors are not included, the part is designed for straightforward integration with compatible Audi and Volkswagen brake systems. Please refer to Dorman's warranty policy for coverage details on the M630204 part.