Dorman M631052 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet City Express

The Dorman M631052 brake master cylinder is designed specifically for Chevrolet City Express models, providing precise hydraulic control for your vehicle's braking system. Engineered with durable aluminum construction, this master cylinder ensures consistent performance and longevity.

Key Features of the Dorman M631052 Brake Master Cylinder

• Constructed from lightweight, corrosion-resistant aluminum material
• Master cylinder bore diameter of 0.9375 inches for accurate hydraulic pressure
• Two mounting holes for secure installation
• Includes two outlets with rearward outlet size M12x1.0 and thread pitch 1.0
• Designed for remote reservoir type (reservoir not included)
• Does not include mounting hardware, brake booster, push rod, bleeder hoses, or sensors

Detailed Description and Specifications

This Dorman brake master cylinder (part number M631052) is engineered to meet the specific hydraulic requirements of Chevrolet City Express vehicles. The aluminum master cylinder body offers resistance to corrosion and heat, contributing to reliable brake system operation. With a bore diameter of 0.9375 inches, it delivers precise brake fluid pressure to the braking system. The unit features two outlets with a rearward outlet size of M12x1.0 and a thread pitch of 1.0, compatible with standard brake line fittings. The master cylinder is designed for use with a remote reservoir, which is not included, and requires separate mounting hardware for installation.

Common Applications and Problem Resolution

• Replaces worn or leaking master cylinders causing brake fluid loss
• Restores proper hydraulic pressure for improved brake pedal feel
• Addresses brake system failure due to internal seal wear or corrosion
• Eliminates spongy or unresponsive brake pedal issues
• Suitable for maintenance or repair of Chevrolet City Express brake hydraulics

Installation Notes and Tips

Installation of the Dorman M631052 brake master cylinder requires removal of the old unit and proper connection to the brake lines using the specified M12x1.0 thread fittings. Since mounting hardware and reservoir are not included, ensure you have compatible components on hand before beginning installation. Bleeding the brake system thoroughly after installation is essential to remove air and ensure optimal brake performance. Professional installation is recommended for safety and accuracy.

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for Chevrolet City Express vehicles. The aluminum construction provides durability and resistance to corrosion. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulic components. Verify warranty coverage with the product documentation or supplier.