Dorman M630791 Brake Master Cylinder

Reliable Brake Master Cylinder Replacement for Your Vehicle

The Dorman M630791 brake master cylinder is engineered to restore proper brake hydraulics performance in compatible vehicles. Designed with an aluminum body and integrated brake booster, this master cylinder ensures consistent braking response and durability.

• Includes brake booster for enhanced braking power
• Constructed from durable aluminum material
• 1.25-inch master cylinder bore diameter for precise hydraulic pressure
• Four mounting holes for secure installation
• Two outlets with M10 x 1.0 rearward outlet thread diameter
• Remote reservoir type for flexible fluid management
• Package includes master cylinder and bleeder kit

Product Details and Specifications

The Dorman M630791 brake master cylinder features a 1.25-inch bore diameter, which is critical for maintaining proper hydraulic pressure in the brake system. Its aluminum construction offers corrosion resistance and long service life. The integrated brake booster included with this part helps reduce pedal effort, improving driver control and safety. This master cylinder has four mounting holes to ensure a stable fitment and two outlets with a secondary outlet thread diameter of 10 mm and a rearward outlet size of M10 x 1.0 thread pitch. The remote reservoir design allows for flexible brake fluid reservoir placement, accommodating various vehicle configurations. The package also contains a bleeder kit to assist with proper brake system bleeding during installation.

Compatible Vehicles and Common Applications

This brake master cylinder is compatible with a range of vehicles requiring a 1.25-inch bore diameter and integrated brake booster setup. It is commonly used in brake hydraulic systems where a remote reservoir is preferred. The Dorman M630791 is suitable for drivers experiencing issues such as:

• Spongy or soft brake pedal feel
• Brake fluid leaks around the master cylinder
• Reduced braking efficiency or pedal travel
• Brake booster failure or insufficient assist
• Brake system contamination or corrosion

Installation Notes and Tips

When installing the Dorman M630791 brake master cylinder, ensure the brake system is properly bled using the included bleeder kit to remove air and maintain hydraulic integrity. Verify that the four mounting holes align correctly with the vehicle’s brake booster assembly. Since mounting hardware is not included, use the original hardware or appropriate replacements. Confirm compatibility with your vehicle’s make and model before installation to ensure proper fitment and function.

Quality Assurance and Warranty Information

Dorman manufactures the M630791 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated brake booster are designed for durability and reliable performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Refer to the product documentation for exact warranty terms.