Dorman M630834 Brake Master Cylinder

Reliable Brake Master Cylinder for Audi and Volkswagen Models

The Dorman M630834 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Audi and Volkswagen vehicles. Designed with precision, this master cylinder ensures consistent brake fluid pressure for safe and effective braking performance.

• Master cylinder bore diameter: 0.938 inches for accurate fluid displacement
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir and sensor for integrated brake system functionality
• Equipped with three outlets, featuring M12 x 1.0 thread pitch for secure connections
• Compatible with Audi A3 and Volkswagen Beetle, Bora, Clasico, Golf, and Jetta models

Product Details and Specifications

This Dorman brake master cylinder (part number M630834) is crafted from aluminum, providing a lightweight yet robust component that resists corrosion and wear. The 0.938-inch bore diameter is designed to match OEM specifications, ensuring proper hydraulic pressure and pedal feel. The included reservoir and sensor allow for seamless integration with the vehicle’s brake fluid monitoring system. Featuring three outlets with M12 x 1.0 thread pitch, this master cylinder supports secure and leak-free connections to the brake lines. Note that mounting hardware is not included with this part.

Compatible Vehicles and Applications

This brake master cylinder is compatible with a range of Audi and Volkswagen models, including the Audi A3 and Volkswagen Beetle, Bora, Clasico, Golf, and Jetta. It is ideal for owners seeking a direct replacement part that meets factory specifications for brake hydraulics.

Common Issues Addressed by This Master Cylinder

• Brake pedal sinking or sponginess due to internal leaks
• Brake fluid leaks around the master cylinder area
• Warning lights triggered by faulty brake fluid sensors
• Reduced braking efficiency caused by worn or damaged master cylinder components
• Inconsistent brake pressure affecting vehicle safety

Installation Notes and Tips

Installation of the Dorman M630834 brake master cylinder requires proper brake system bleeding to remove air and ensure optimal performance. Since mounting hardware is not included, retain original fasteners or acquire appropriate replacements. Verify thread sizes (M12 x 1.0) for brake line fittings to ensure compatibility. It is recommended to inspect related brake components during installation for overall system integrity.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The M630834 brake master cylinder undergoes rigorous quality control to ensure fit and function. Please refer to Dorman’s warranty policy for specific coverage details.