Dorman M631025 Brake Master Cylinder

Reliable Brake Master Cylinder for Toyota Corolla and Matrix

The Dorman M631025 Brake Master Cylinder is engineered to provide consistent hydraulic pressure for your Toyota Corolla or Matrix braking system. Designed with precision, this master cylinder ensures reliable brake performance and safety.

• Compatible with Toyota Corolla and Matrix models
• Aluminum master cylinder material for durability and corrosion resistance
• Includes a removable reservoir and master cylinder cap for easy maintenance
• Equipped with a sensor for accurate brake system monitoring
• Two mounting holes and dual outlets with M12 x 1.0 rearward outlet thread diameter

Product Features and Specifications

The Dorman M631025 master cylinder features a 0.875-inch bore diameter, providing optimal hydraulic pressure for effective braking. Constructed from aluminum, it offers strength and resistance to wear. This unit includes a removable reservoir and master cylinder cap, facilitating fluid inspection and replacement. The integrated sensor supports brake system diagnostics, enhancing safety. It has two outlets with a secondary outlet thread diameter of 12 mm, and two mounting holes for secure installation. Note that mounting hardware, brake booster, push rod, bleeder hoses, and mounting bracket are not included.

Applications and Common Issues Addressed

• Restores proper hydraulic pressure in Toyota Corolla and Matrix brake systems
• Replaces leaking or damaged master cylinders causing brake fluid loss
• Resolves spongy or unresponsive brake pedal feel
• Fixes brake warning light issues related to sensor malfunction
• Addresses reservoir leaks or cracks with the included removable reservoir

Installation Notes and Tips

Installation requires removal of the old master cylinder and careful connection of brake lines to the two outlets. Ensure the sensor is properly connected to maintain brake system monitoring. Since mounting hardware is not included, retain original bolts or source compatible fasteners. Bleeding the brake system after installation is necessary to remove air and ensure proper brake function. The removable reservoir simplifies fluid replacement during installation.

Quality Assurance and Warranty

Dorman manufactures the M631025 master cylinder to meet or exceed OEM standards for fit and function. The aluminum construction provides corrosion resistance and long service life. This part includes a sensor to maintain system diagnostics. While specific warranty details should be confirmed at purchase, Dorman typically offers limited warranties covering defects in materials and workmanship.