Dorman M630879 Brake Master Cylinder

Reliable Brake Master Cylinder for Land Rover Discovery

The Dorman M630879 brake master cylinder is engineered to provide consistent hydraulic pressure for your Land Rover Discovery's braking system. Designed with durable cast iron and equipped with a removable reservoir, this master cylinder ensures dependable performance and ease of maintenance.

• Master cylinder bore diameter: 1.0625 inches
• Constructed from cast iron for durability
• Includes a removable reservoir for easy servicing
• Equipped with a sensor for brake fluid level monitoring
• Two outlets with M12 x 1.0 thread size for secure connections
• Compatible specifically with Land Rover Discovery models
• Package includes the master cylinder only; mounting hardware not included

Product Details and Specifications

The Dorman M630879 brake master cylinder features a 1.0625-inch bore diameter, crafted from cast iron to withstand the demands of brake hydraulics. It comes with a removable reservoir that simplifies fluid checks and replacement. The integrated sensor helps monitor brake fluid levels, enhancing safety by alerting drivers to low fluid conditions. This master cylinder has two outlets, both with M12 x 1.0 thread pitch, ensuring compatibility with the Land Rover Discovery's brake lines. Note that mounting hardware is not included, so existing hardware should be reused or sourced separately.

Applications and Common Issues Addressed

• Restores proper hydraulic pressure in the brake system
• Resolves brake fluid leaks from a worn or damaged master cylinder
• Eliminates spongy or unresponsive brake pedal feel
• Replaces faulty brake fluid level sensors to maintain warning system functionality
• Addresses brake system failure symptoms related to master cylinder wear

Installation Notes and Tips

Installation of the Dorman M630879 brake master cylinder requires careful attention to brake line connections and proper bleeding of the brake system to remove air. Since mounting hardware is not included, verify the condition of existing bolts and fittings before installation. The removable reservoir design facilitates fluid handling during installation and maintenance. It is recommended to consult the Land Rover Discovery service manual for torque specifications and detailed installation procedures.

Quality Assurance and Warranty

Dorman manufactures the M630879 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and integrated sensor are tested for durability and reliability. 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.