Dorman M630794 Brake Master Cylinder

Reliable Brake Master Cylinder Replacement for Your Vehicle

The Dorman M630794 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 pressure and durability.

• Aluminum master cylinder material for corrosion resistance and strength
• Includes brake booster for enhanced braking assistance
• Master cylinder bore diameter of 1.375 inches for precise hydraulic control
• Four mounting holes for secure installation
• Two outlets with rearward outlet size M10 x 1.0 and secondary outlet thread diameter M12 x 1.0
• Remote reservoir type for flexible brake fluid management
• Package includes master cylinder and bleeder kit for maintenance

Product Details and Specifications

The Dorman M630794 master cylinder features a 1.375-inch bore diameter, which is critical for maintaining the correct hydraulic pressure in the brake system. Its aluminum construction offers durability and resistance to corrosion, extending the service life of the component. The integrated brake booster included with this part helps reduce pedal effort, improving driver control and comfort. This master cylinder is designed with four mounting holes to ensure a secure fitment in the brake system assembly. It has two outlets: a rearward outlet sized M10 x 1.0 and a secondary outlet with a thread diameter of M12 x 1.0, both with a thread pitch of 1.0, allowing compatibility with specific brake line fittings. The remote reservoir type allows for flexible placement of the brake fluid reservoir, which is not included with this part.

Common Applications and Problem Resolution

• Restores brake pressure and pedal feel in vehicles experiencing spongy or soft brakes
• Replaces master cylinders with internal leaks or worn seals
• Addresses brake booster failures affecting pedal effort and braking response
• Solves issues related to inconsistent brake fluid flow due to damaged or corroded master cylinders
• Improves overall brake system reliability in vehicles requiring a 1.375-inch bore diameter master cylinder

Installation Notes and Tips

When installing the Dorman M630794 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 mounting holes align correctly with the vehicle’s brake assembly. Since the reservoir and push rod are not included, reuse the existing components or source compatible replacements as needed. Confirm that brake lines match the specified outlet thread sizes (M10 x 1.0 and M12 x 1.0) for proper connection. It is recommended to inspect the brake booster and related components during installation to ensure full system functionality.

Quality Assurance and Warranty Information

Dorman manufactures the M630794 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated brake booster contribute to long-term durability and consistent braking performance. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics components. Consult product documentation or the supplier for exact warranty terms.