Dorman M630865 Brake Master Cylinder

Reliable Brake Master Cylinder for Toyota Avalon and Camry

The Dorman M630865 Brake Master Cylinder is engineered to restore proper brake hydraulics in your Toyota Avalon or Camry. Designed with precision, this master cylinder ensures consistent brake fluid pressure for safe and responsive braking performance.

• Master cylinder bore diameter of 0.875 inches for accurate fluid displacement
• Durable aluminum construction for corrosion resistance and longevity
• Includes reservoir and sensor for integrated brake system functionality
• Two outlets with M12 x 1.0 thread size for secure brake line connections
• Compatible with Toyota Avalon and Camry models requiring part number M630865

Product Details and Specifications

This Dorman brake master cylinder features a 0.875-inch bore diameter, which is critical for maintaining the correct hydraulic pressure in the brake system. Constructed from aluminum, the unit offers enhanced durability and resistance to corrosion compared to traditional materials. The included reservoir allows for proper brake fluid storage, while the integrated sensor supports brake fluid level monitoring. The master cylinder has two outlets, both with M12 x 1.0 thread pitch, ensuring compatibility with the brake lines on Toyota Avalon and Camry vehicles. This part is supplied as the master cylinder only, without mounting hardware.

Common Applications and Problem Resolution

• Restores brake fluid pressure in Toyota Avalon and Camry brake systems
• Replaces worn or leaking master cylinders causing brake pedal issues
• Addresses brake fluid leaks from the master cylinder reservoir or outlets
• Resolves brake warning light activation related to sensor faults
• Improves brake pedal feel and responsiveness after master cylinder failure

Installation Notes and Tips

When installing the Dorman M630865 master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Verify that the M12 x 1.0 threaded outlets match your vehicle’s brake line fittings. Since mounting hardware is not included, retain or source the necessary components for secure installation. Check sensor connections carefully to maintain brake fluid level monitoring functionality.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for Toyota Avalon and Camry models. The aluminum construction and integrated sensor contribute to reliable operation under normal driving conditions. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship.