Dorman M630949 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford F-250 and F-350 Super Duty

The Dorman M630949 Brake Master Cylinder is engineered to restore proper brake hydraulics in Ford F-250 Super Duty, F-350, and F-350 Super Duty trucks. Designed with durable cast iron and a removable reservoir, this master cylinder ensures consistent braking performance for heavy-duty applications.

• Master cylinder bore diameter: 1.313 inches for precise hydraulic pressure
• Constructed from cast iron for strength and durability
• Includes a removable reservoir for easy maintenance
• Equipped with two outlets and a sensor for accurate brake fluid monitoring
• Secondary outlet thread diameter: 12 mm with M14 x 1.5 rearward outlet size
• Compatible with Ford F-250 Super Duty, F-350, and F-350 Super Duty models

Product Details and Specifications

The Dorman M630949 brake master cylinder features a 1.313-inch bore diameter, which is critical for maintaining the correct hydraulic pressure in your vehicle's braking system. Made from cast iron, this master cylinder offers enhanced durability and resistance to wear under demanding conditions. The included removable reservoir simplifies brake fluid inspection and replacement, while the integrated sensor helps monitor fluid levels to prevent brake failure. With two outlets and specific thread sizes (12 mm secondary outlet and M14 x 1.5 rearward outlet), this part is designed to fit precisely within the brake hydraulics system of compatible Ford Super Duty trucks.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or damaged master cylinder
• Eliminates brake fluid leaks from cracked or corroded reservoirs
• Resolves brake pedal sinking or sponginess caused by internal seal failure
• Addresses sensor malfunctions related to brake fluid level monitoring
• Replaces master cylinders with incompatible or incorrect bore sizes

Installation Notes and Tips

Installation of the Dorman M630949 master cylinder requires careful attention to brake line connections and proper bleeding of the brake system to remove air. Since mounting hardware is not included, retain original fasteners or source compatible replacements. The removable reservoir design facilitates fluid handling during installation. Verify thread pitch and outlet sizes to ensure correct fitment with existing brake lines on Ford F-250 and F-350 Super Duty models.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for Ford Super Duty trucks. The cast iron construction and integrated sensor contribute to reliable brake system performance. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship.