Dorman M630840 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford Explorer

The Dorman M630840 Brake Master Cylinder is engineered to restore proper brake hydraulics for your Ford Explorer. Designed with precision, this master cylinder includes a removable reservoir and sensor to ensure consistent brake performance and safety.

• Master cylinder bore diameter: 1.125 inches for accurate hydraulic pressure
• Constructed from durable aluminum material for corrosion resistance
• Includes a removable reservoir for easy maintenance
• Equipped with a sensor to monitor brake fluid levels
• Two outlets with secondary outlet thread diameter of 14 mm and rearward outlet size M14 x 1.5
• Thread pitch of 1.5 for secure fitting

Product Details and Specifications

This Dorman brake master cylinder (part number M630840) is specifically designed for the Ford Explorer, ensuring compatibility and reliable operation. The aluminum construction provides strength and resistance to wear, while the 1.125-inch bore diameter supports proper hydraulic pressure for effective braking. The included removable reservoir simplifies fluid checks and refills, and the integrated sensor helps monitor fluid levels to prevent brake failure. Featuring two outlets with precise thread sizes, this master cylinder fits securely into the brake hydraulic system without the need for additional mounting hardware.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or leaking master cylinder
• Eliminates brake fluid leaks from damaged reservoirs
• Resolves brake warning light issues related to fluid level sensor faults
• Improves brake pedal feel and responsiveness
• Replaces corroded or damaged aluminum master cylinders in Ford Explorer models

Installation Notes and Tips

When installing the Dorman M630840 brake master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. The removable reservoir allows for easier fluid handling during installation. Verify thread pitch and outlet sizes match your vehicle’s brake lines to avoid leaks. Although mounting hardware is not included, the part is designed to fit directly into the Ford Explorer brake system for a straightforward replacement.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term reliability. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship.