Dorman M83579 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford E-100 Econoline and F-Series Trucks

The Dorman M83579 brake master cylinder is designed to restore proper brake function in select Ford trucks. Engineered with cast iron construction and a 1-inch bore diameter, this master cylinder is compatible with Ford E-100 Econoline, F-100, and F-250 models, providing dependable hydraulic performance.

• Cast iron master cylinder material for durability
• 1-inch bore diameter for precise hydraulic pressure
• Includes reservoir for fluid storage
• Two outlet ports with rearward outlet size 1/2-20 and secondary outlet thread diameter 9/16-18
• Package contains the master cylinder only; mounting hardware not included

Product Details and Specifications

The Dorman M83579 brake master cylinder features a cast iron body that offers strength and resistance to wear under demanding braking conditions. Its 1-inch bore diameter ensures consistent hydraulic pressure delivery to the brake system. The included reservoir allows for proper brake fluid containment, while the two outlets accommodate standard brake line connections with rearward outlet size 1/2-20 and secondary outlet thread diameter 9/16-18. This part is designed specifically for Ford E-100 Econoline, F-100, and F-250 trucks, ensuring compatibility with the brake hydraulics system of these vehicles.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or leaking master cylinder
• Eliminates spongy or unresponsive brake pedal feel
• Replaces master cylinder with damaged or corroded cast iron body
• Addresses brake fluid leaks from the reservoir or outlet ports
• Improves overall brake system reliability on Ford E-100 Econoline, F-100, and F-250 trucks

Installation Notes and Tips

Installation of the Dorman M83579 master cylinder requires proper brake system bleeding to remove air and ensure optimal hydraulic function. Note that mounting hardware is not included, so existing hardware should be inspected and replaced if necessary. Verify outlet thread sizes (1/2-20 rearward and 9/16-18 secondary) to ensure compatibility with brake lines. It is recommended to consult the vehicle’s service manual for torque specifications and installation procedures specific to Ford E-100 Econoline, F-100, and F-250 models.

Quality Assurance and Warranty Information

Dorman manufactures the M83579 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and precise bore diameter contribute to long service life and consistent braking performance. While specific warranty details should be confirmed at the time of purchase, Dorman typically offers limited warranties covering defects in material and workmanship.