Dorman M630223 Brake Master Cylinder

Reliable Brake Master Cylinder for Mazda Protege and Protege5

The Dorman M630223 Brake Master Cylinder is engineered to restore proper brake hydraulics for Mazda Protege and Protege5 models. Designed with precision, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.

Key Features of the Dorman M630223 Brake Master Cylinder

• Master cylinder bore diameter of 0.938 inches for accurate hydraulic performance
• Constructed from durable aluminum material for corrosion resistance and longevity
• Includes an integrated reservoir for brake fluid storage
• Equipped with a sensor to monitor brake system status
• Three outlet ports with a secondary outlet thread diameter of 10 mm and rearward outlet size of M10 x 1.0
• Thread pitch of 1.0 for secure and precise fittings
• Package contains the master cylinder unit only; mounting hardware not included

Detailed Description of the Dorman Brake Master Cylinder

This brake master cylinder is specifically designed for Mazda Protege and Protege5 vehicles, providing a direct replacement that meets OEM specifications. The aluminum construction offers a balance of strength and weight savings, while the 0.938-inch bore diameter ensures proper hydraulic pressure for effective braking. The included reservoir simplifies brake fluid management, and the integrated sensor supports vehicle brake system monitoring. With three outlets and precise thread dimensions, this master cylinder facilitates proper brake line connections for optimal system performance.

Common Brake Issues Addressed by This Master Cylinder

• Spongy or unresponsive brake pedal feel
• Brake fluid leaks from the master cylinder or reservoir
• Brake warning light activation due to sensor faults
• Reduced braking efficiency or inconsistent stopping power
• Contaminated or degraded brake fluid affecting system pressure

Installation Notes and Tips

Ensure the brake system is fully depressurized before removing the old master cylinder. Properly bleed the brake lines after installation to remove air and restore hydraulic pressure. Verify that the sensor connections are secure and compatible with the vehicle’s electrical system. Use thread sealant if recommended for outlet fittings to prevent leaks. This part does not include mounting hardware, so retain or source necessary bolts and fasteners separately.

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed industry standards for fit and function. The aluminum construction and integrated sensor are tested for durability and reliability. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or the supplier for exact warranty terms.