Dorman M630837 Brake Master Cylinder

Reliable Brake Master Cylinder for Audi Models

The Dorman M630837 brake master cylinder is engineered to provide consistent hydraulic pressure for your Audi A4, A5, Q5, and related models. Designed with precision, this aluminum master cylinder ensures dependable braking performance without including a reservoir or sensor.

• Master cylinder bore diameter: 1 inch for accurate hydraulic control
• Constructed from durable aluminum material for corrosion resistance
• Equipped with two outlets featuring M12 x 1.0 thread size for secure connections
• Includes the master cylinder only; reservoir and sensor are not included
• Compatible with Audi A4, A4 allroad, A4 Quattro, A5, A5 Quattro, allroad, Q5, S4, and S5 models

Product Details and Specifications

The Dorman M630837 brake master cylinder is designed to meet the hydraulic braking needs of various Audi vehicles. Its 1-inch bore diameter allows for precise fluid displacement, essential for maintaining proper brake pressure. The aluminum construction offers a balance of strength and corrosion resistance, extending the part's service life. This master cylinder features two outlets, both with M12 x 1.0 thread pitch, ensuring compatibility with standard brake line fittings. Note that this unit does not include a reservoir or sensor, so it is intended for applications where those components are either already installed or replaced separately.

Compatible Audi Models and Applications

• Audi A4 and A4 allroad
• Audi A4 Quattro
• Audi A5 and A5 Quattro
• Audi allroad
• Audi Q5
• Audi S4 and S5

This master cylinder is suitable for drivers seeking a direct replacement part that matches original equipment specifications for these Audi models.

Common Issues Addressed by This Master Cylinder

• Brake pedal feels spongy or soft due to internal leaks
• Loss of hydraulic pressure causing reduced braking efficiency
• Brake fluid leaks around the master cylinder area
• Brake warning light activation related to master cylinder failure
• Inconsistent brake pedal travel or sinking pedal

Installation Notes and Tips

When installing the Dorman M630837 brake master cylinder, ensure the brake system is properly bled to remove air and restore hydraulic pressure. Since mounting hardware is not included, retain or source the necessary bolts and fittings compatible with your Audi model. Verify that the brake lines match the M12 x 1.0 thread size for a secure connection. It is recommended to inspect the reservoir and sensor components separately, as this master cylinder does not include these parts.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit and function. While specific warranty details are not provided here, Dorman typically offers limited warranties covering defects in materials and workmanship. For precise warranty information, consult the product documentation or manufacturer resources.