Dorman M630623 Brake Master Cylinder

Overview of Dorman Brake Master Cylinder M630623

The Dorman Brake Master Cylinder M630623 is designed specifically for Ford E-150, E-250, and E-350 Super Duty models. This brake hydraulics component ensures reliable brake fluid pressure and includes essential features such as an integrated reservoir and sensor for optimal performance.

• Master cylinder bore diameter: 1.313 inches
• Constructed from durable aluminum material
• Includes reservoir and sensor for brake fluid monitoring
• Equipped with three outlets for efficient brake line connections
• Rearward outlet size: M14 x 1.5 thread
• Secondary outlet thread diameter: M12 x 1.0 with 1.0 thread pitch
• Package contains the master cylinder only; mounting hardware not included

Detailed Product Description

The Dorman M630623 brake master cylinder is engineered with a 1.313-inch bore diameter to provide consistent hydraulic pressure for the braking system of Ford E-150, E-250, and E-350 Super Duty vehicles. Its aluminum construction offers corrosion resistance and durability under demanding conditions. The integrated reservoir simplifies installation and maintenance by housing brake fluid securely, while the included sensor allows for real-time monitoring of fluid levels. Featuring three outlets, this master cylinder supports multiple brake line connections, with precise thread sizes (M14 x 1.5 rearward outlet and M12 x 1.0 secondary outlet) to ensure compatibility with factory brake lines.

Common Applications and Problem Resolution

• Restores proper brake fluid pressure in Ford E-Series vans
• Replaces worn or leaking master cylinders causing brake pedal issues
• Addresses brake fluid leaks from damaged reservoirs or seals
• Resolves brake warning light activation due to faulty fluid sensors
• Improves brake system responsiveness and safety

Installation Notes and Tips

Installation of the Dorman M630623 master cylinder requires careful attention to brake line connections and proper bleeding of the brake system to remove air. Note that mounting hardware is not included, so existing hardware should be inspected and reused or replaced as necessary. Ensure the sensor connector is properly attached to maintain accurate brake fluid level monitoring. Follow vehicle-specific service manual instructions for torque specifications and safety precautions.

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 should be confirmed at the time of purchase, Dorman typically offers limited warranties covering defects in materials and workmanship.