Dorman M630123 Brake Master Cylinder

Reliable Brake Master Cylinder for Toyota Avalon

The Dorman M630123 Brake Master Cylinder is engineered to restore proper brake hydraulics in your Toyota Avalon. Designed with precision, this master cylinder features a durable aluminum construction and includes a removable reservoir and sensor for enhanced functionality.

• Master cylinder bore diameter: 0.813 inches for accurate hydraulic pressure
• Constructed from lightweight, corrosion-resistant aluminum
• Includes a removable reservoir for easy maintenance
• Equipped with a sensor to monitor brake fluid levels
• Two outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0
• Compatible specifically with Toyota Avalon models

Product Details and Specifications

This Dorman brake master cylinder (part number M630123) is designed to meet the exact specifications required for Toyota Avalon brake hydraulics. The aluminum material ensures durability and resistance to corrosion, while the 0.813-inch bore diameter provides consistent hydraulic pressure for reliable braking performance. The included removable reservoir simplifies brake fluid inspection and replacement, and the integrated sensor helps maintain optimal fluid levels by alerting you to any issues. Featuring two outlets with a secondary outlet thread diameter of 10 mm and a rearward outlet size of M10 x 1.0, this master cylinder is engineered for precise fitment and function.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or damaged master cylinder
• Eliminates brake fluid leaks from cracked or faulty reservoirs
• Resolves brake warning light issues related to sensor failure
• Improves brake pedal feel and responsiveness
• Addresses hydraulic system failures in Toyota Avalon brake systems

Installation Notes and Tips

When installing the Dorman M630123 master cylinder on your Toyota Avalon, ensure the brake system is properly bled to remove any air pockets. The removable reservoir allows for easier fluid handling during installation. Verify that the sensor connections are secure to maintain accurate brake fluid level monitoring. Note that mounting hardware is not included and may need to be sourced separately. Follow manufacturer torque specifications for outlet fittings to prevent leaks.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction offers long-lasting durability under normal operating conditions. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship. Always consult product documentation for exact warranty terms.